i work for a merc. Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction. Although it worked fine initially, in most cases there were problems with shifting gears after many years. This is very similar to the symptoms here. The Mercedes Benz OM612 engine is a 5-cylinder diesel engine with 2 overhead camshafts that drive 20 valves through pushrods. The only solution is to replace the faulty CKP sensor. Please watch this video and subscribe to my YouTube channel. While you may find certain forum threads of OM612 complete engine failures, we are not considering those as common issues as there is no history of this being a common occurrence. Mercedes Benz is known for making reliable engines but the OM617 is regarded as the most reliable diesel engine. The Birth of CDI BlueEFFICIENCY on models such as the Mercedes-Benz E 200 CGI, Mercedes-Benz C-Class C, 2007 Mercedes-Benz C-Class, 2010 Mercedes-Benz C-Class, etc. DPF cleaning Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. Required fields are marked *. Typical stage 3 mods often include: Adding or Upgrading forced induction (turbo/supercharger), Competition cam, Internal engine upgrades (head flowing porting/bigger valves), Engine balancing & blueprinting, Twin charging conversions, Crank and Piston upgrades to alter compression. If you continue to use this site we will assume that you are happy with it. It also has the same problem with oil leakage as the M111. So, after the Fiats 1.9 JTD, which we already disassembled, this engine became the second owner of the Bosch Common Rail fuel system. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. The 3.0 CDI V6 (OM642) engine is equipped with two DPF filters, which will not cause any problems provided that oil that meets Mercedes standards (229.31 or 229.51) is used, and the entire power unit is properly taken care of. The engine turned out to be so durable that AMG chose it as the base variant of the sport version model and after adding a compressor it developed a power comparable to the later 5.4l. How much and is it worth buying a Mercedes C-Class (W203)? Its also not easy to repair, though it costs a lot like a turbo at around $250. Choosing a higher performance camshaft profile raises the power band accordingly. Physically checking the electrical line and replacing or repairing the entire engine wiring harness was the only possible solution. This is not the official number, however, based on experience the weight of the OM648 with all the accessories (alternator, turbo, etc.) All engines are equipped with intercoolers. independent specailist company and we are starting to notice serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply we normally fit secondhand low mileage engines but even these are now running in short supply so the second one of the month we are rebuilding as exchange unit is 9500 +vat mb price. Fuel pressure control valve failure. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. MPG calculator The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. It is a unit where different opinions can be found or heard. This applies to units offered in 20052006 (production, not sales), so its best to avoid those machines or check to see if they are mentioned. The posted views of our members are in no way the views of MBClub.co.uk or its owners. Mar 2, 2010. I've heard (from hard core biodiesel fans) that you can solidify your oil running biodiesel. Front engine bearings can fail. Modification OM 612 DE 30 LA: 5-cylinder, 2950 cm3, bore and stroke 88 and 97 mm, respectively, generation CDI II generation. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. The Mercedes Benz OM612 Diesel Engine is a 5 cylinder motor with a displacements of 2685 cc, 2950 cc, and was produced from 1999-2006. We use cookies to ensure that we give you the best experience on our website. However, I dont think its worth buying this model for as low as $1500-$2500. Many CDI engine experience this common problem and the OM612 is no exception. Fuel injector washer problems and "Black Death". It is one of the most costly upgrades but provides the best gains. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. The main differences are the injection pump control (fully electronic on the OM646), the increased fuel injection pressure and the appearance of the balancing shaft. Unfortunately, suffers from oil spills and leaks. The Mercedes OM602 engine is a 5-cylinder diesel engine of 2.5 or 2.9 L (2,497 or 2,874 cc). If you are developing a track car this doesn't matter as you are in the high end of your RPM range anyway and that is where you want the power to be. It debuted shortly before the advent of this generation of C-Class. Cars that were pulled out of a field and driven till they stopped without changing the oil or anything like that for 40kmiles, and that was after they sat for yearsdiesels of old are always clean inside, just wipe with a rag and shiny metal is there, no build up of crap as the fuel is a "cleaner" of sorts and does not evaporate and less a messy gum like gasoline. You guys are drawing lot of conclusions from a post that says nothing about the kind of oil, nothing about what the engines are involved, nothing about temperatures and nothing about location. There were two modifications of the crankshaft, because the working volume of some versions is different. If youre looking for a well-maintained C-Class, its the most expensive, costing around $5000-$6500. Replacing the engine harness is neither simple, nor is it cheap. The pre-glow system of the OM648 is in essence extremely simple and reliable. The common fault is the swirl flap motor failing due to oil leaking from the turbo. If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. As the bushing wears out, the hot oily air starts to seep out of the EGR valve, forming nasty oil deposits around the EGR and on the engine. Life On Four is more than just another automotive media outlet. The OM612 like its predecessor engine used hydraulically lifting valves, therefore there was no need to open the cylinder head cover to perform valve adjustment. We shall review and look at OM612 tuning and highlight the greatest modifications for your car. Which models used the 2.7 litre Mercedes Benz diesel engine? It features a common rail fuel injection system. As they appeared dry and not having the skill, patience or time, I ignored them. Turn on the engine and inspect the filter for any leaks. Another problem is carbon and oil deposits. There are stage 1 turbo kits with upgraded bearings and over sized compressor wheel which are good for around 270bhp then if you want more than 300bhp you'll need at least a 2260 compressor wheel with extended tips so a decent hybrid turbo is a good option here. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. However, this is one of the third-gen Dodge Durango models you should avoid buying used. Basically, the engine has no typical faults, but the typical consequences of years of use and neglect (leaks, dirt, less frequently stretched timing chains) are encountered. Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability, Specifications Of The Mercedes 2.2 CDI OM611 Engine, Modification: OM611 DE 22 LA red. 321,869 km) with just regular maintenance and care. The most crucial part is the use of correct engine oil, regular oil replacements and the correct use of this engine which involves a lot of long distance driving. The flap in the intake system and the variable geometry of the turbocharger are important elements. It was first used in the OM611 engine which was a 2.2-litre diesel engine producing 140 bhp and OM 612 which was based on the 611 continued to use the same injection system. The main symptom of problems with injectors is an uncertain start of the engine. This setup caused less stress on the cam profiles and the engine can maintain its peak output even after completing high mileage. Here is a full breakdown. Cookies set by third parties may be required to power functionality in conjunction with various service providers for security, analytics, performance or advertising purposes. The area that is quite disturbing to users is electricity. Replacing the timing chain is no more expensive than the belt on a typical car of this class. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. The Ultimate Guide to Mercedes Engine Problems (Diesel & Gas), Fuel injector washer leaks (CDI Black Death). The biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. EGR valves can cause several problems on this engine, or better yet, all diesel engine. We use cookies to ensure that we give you the best experience on our website. The consent submitted will only be used for data processing originating from this website. Fuel Rail pressure regulator!, sticky and degraded.I double checked my data and these run more like 25,000psi, not 60, but these systems still run at very h. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. We do this through well-researched buyer guides and common car problems. Join our forum today and benefit from over 300,000 posts on tuning Now there is the 16-valve aluminum cylinder head with two camshafts, hydraulic lifters/tappets, and electronic fuel injection. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. Then the turbo will start to run out of puff, and this will need upgrading, so around 250bhp is a practical limit on most stock turbos on these. We won't be swayed by popular OM612 parts, they need to be cost effective. Lets find out whos right! We strongly recommend you to be generous with your injector capacity. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The third weak point is the variable geometry turbo regulator. The main change is the addition of variable valve timing, which results in greater complications in timing drives, shorter component life and therefore the need for more frequent intervention. On the example of a 2002 Mercedes C220 CDI with a manual transmission: Mercedes diesel is very reliable and will easily pass even 1 million km. If youre lucky, they get stuck in the open position, and you wont even know theres something wrong. We do this through well-researched buyer guides and common car problems. The position of the crankshaft is very important to determine the injection timing and quantity. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. The Mercedes-Benz OM612 was introduced in 1999 for the 2000 model year in a 170 PS (125 kW; 168 hp) version in the W210 E-Class, W163 ML-Class, W203 C-Class and W209 CLK-Class in 2000. The engine keeps on turning until the battery is dead. This article uses bare URLs, which are uninformative and vulnerable to link rot. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. Thank you mattml430 Premium Member If the engine stalls while driving, but then restarts with no issues when it cools down, youre probably looking at a failed crankshaft position sensor. I saw high iron, but attributed it to wear in on a new engine. Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. The engine is turbocharged and intercooled. Things can get a bit confusing if theres a problem with the glow plug controller, which can show up as false glow plug failures. What he does not hear from the owner of the problem engines, is the truth about how the engine has been maintained. Our advertising partners also use cookies. Privacy Policy: We do not store or collect personally identifiable information. Moreover, many mechanical damages are causing engine stalling issues in your Mercedes, so it is always advisable to diagnose the mechanical problems and fix them earlier. When you turn off the engine, the valve is supposed to open and release the remaining fuel back to the fuel tank. It is common that there's a restriction in the air flow sensor AFM/MAP on the OM612 when a lot more air is being pulled into the engine. The fuel injectors are calibrated at the time of production and the data is stored in the form of an IMA code. If you want less trouble, look for the RWD variant. Here, careful verification is important. Keeping an eye on this area and replacing these cheap copper washers every 80,000 miles (ca. What was the commercial name of the OM612 engine? Oil leaks. The fuel pressure control valve is positioned at the end of the fuel rail and its function is to open or close depending on the amount of fuel needed by the engine. NA (naturally aspirated) engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your OM612. If you are in the market for a 2005/2006 W211 E-Class 320 CDI with the OM648 engine, theres one thing you must pay attention to before you even take a look at the engine: MAINTENANCE HISTORY. The 2011 Dodge Durango is powered by a 290 horsepower 3.6-liter V6 engine. I just started the process of opening a case with MB. Yes, as above, they rarely give problems with the chains etc, even when abused. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Both has automatic gearbox. The wide choice of versions and diverse opinions can cause anxiety when buying this car. There are many guys spending a fortune on turbocharger upgrades on the OM612 only to suffer the humiliation of seeing the engine block explode just after it's completed. View and Download Mercedes-Benz OM602 service manual online. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. It wasn't even a hot summer. Which is better, the newer V6 OM642 engine or the older l6 OM648 engine? Also for: Om603. OM612 Engine Harness Remove and Replace. Modification OM 612 DE 27 LA: 5-cylinder, 2685 cm3, bore and stroke 88 and 88.3 mm, respectively, generation CDI II generation. Please use our forums if you wish to ask a tuning question, and please note we do not sell parts or services, we are just an online magazine. Because I love writing and researching, especially about cars. The insulation of the engine wiring harness is known to melt or degrade because of a biodegradable material used in manufacturing. Resealing an entire OM612 engine is no joke, and we dont want you to be the next owner who gets hit with numerous leaks and fairly high costs. The EGR valve can get blocked up by a mixture of carbon and oil deposits. offers great performance. 3. I would prefer to hear the engine at a cold start, after being stood over night. Save my name, email, and website in this browser for the next time I comment. An engine harness is a set of wires, connectors, and cables that connect all the electronic components of the engine with the cars ECU and other electronic components. 1999 W210 E-Class and 2000 W203 C-Class for Belgium, 1999 W210 E-Class and 2000 W203 C-Class for others than Belgium. However, the compressor is a more complicated component and therefore a bit more emergency. Thats usually not the case. Please see terms for details. It was also turbocharged with an air-cooled intercooler, the 2.7-litre displacement effortlessly produced more than 160 horsepower. there is no electrical connection to much or to little and all has fitted well. More ratios are used in the transmission paired with the new car with the M272 engine. 128,748 km) is the only solution. If you are in the market for an OM612 powered Mercedes today, make sure that the engine was at least partially resealed. the company used the OM 612 in the following models. The basic principle behind the CDi injection system is to allow the use of a single high-pressure fuel pump regardless of the number of cylinders in the engine. Diesels. Combi with so round that it has a bit bigger 470 l for roller shutter. Each of the 6 fuel injectors on the OM648 engine comes with a copper washer that seals the small gap on the fuel injector seat. Tips for N54 Tuning On the other hand, you have 10% of the owners who claim that it sounds like a tractor and theres no end to its numerous problems. Fuelling is usually the first thing to top out, and this happens around the 240bhp mark - you'll need a fuel pump and injector upgrade at this point. My name is Daniel Hall, but I am more known as Daniel Word on the internet. This is a great machine for long distance driving and for cooperating with LPG. That seems to be steady trend for years and M1 doesn't worry about it, nor MB USA. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. Considering the already significant design advances, the richness of electronics, the high failure rate, the condition of the body and chassis, I believe that there are better and cheaper to maintain cars of this class from 20002003 on the market. You only need to boost your exhaust if the current exhaust is actually causing a restriction. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. This includes fuel injector failure, turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks. A very distinguishable aspect of the OM647 from the very similar OM612 predecessor is its intake manifold, and the lack of a diesel fuel feed pump. Well tell you all about as we continue. Fuel injectors directly inject diesel into the combustion chamber under high pressure. An example of data being processed may be a unique identifier stored in a cookie. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. Then you will pay about $500 for parts alone. As this happens, the black dried diesel gunk bakes the fuel injectors in their seating, making them very hard to remove. Adding a supercharger or additional turbo will make large torque gains, although harder to configure. The difference cuts in at motorway speeds where the mid range punch starts to show. Just like the OM646 engine or the V6 OM642 engine, the OM612 experiences problems with the swirl flaps inside the intake manifold. Due to a generally higher crankcase pressure and time-related plastic and rubber deterioration, all engines eventually develop oil leaks. The modified OM612 was a 3.0-litre engine and produced 230 horsepower and 540 Nm of torque. Is the 2005 Mercedes Benz E55 AMG a good car? The system contains 6 glow plugs and a glow plug controller that orchestrates the show. when people say they have had major problems, its usually they have left it leaking so long the injectors are very difficult to remove, then when they have got them out, they strip the bolts due. Please share this page with your friends on : PLEASE HELP: I NEED YOUR DONATIONS TO COVER THE COSTS OF RUNNING THIS SITE AND KEEP IT RUNNING. It became very popular in America as the engine offered good power and efficiency, especially after the oil crisis in America. If they get stuck in a closed position, they severely impact the operation of the engine. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. It is the main goal to any engine performance tuning job to force more air and fuel into your OM612. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. Thats why I compiled the list above in this way. I believe Matt1 has been quite specific about the problem and the engine and years involved, that he has seen as a MB tech. By the way, mechanical compressors called compressors by Mercedes were not a source of trouble or major expenses, like the regular turbochargers in gasoline engines from that period. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. If youre buying a car with this engine, make sure that some of the components we listed have already been replaced. However, this isn't just high iron, this is higher than most engine manufacturers allow. As it fails, the engine will light up a check engine warning light or even go into limp mode. When you improve the power you will need to uprate to the fuel delivery. In the most severe cases, the crankshaft cracks. We think this one is common sense, but you'll need to match your fuel injector to the type of fuel your car uses as well. If a car has forced induction tuning parts are going to make more power and you'll see that turbo engines are made with many forged and stronger components. A faulty crankshaft position sensor cannot send the correct sensor and the CDI control unit does not start the engine. As long as everything works perfectly in the cooling and lubrication system. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. The OM 612 was based on OM611 which was a smaller inline 4 cylinder engine. Bio Diesel contains some glycerides (waste veggie oil contains much more glycerides) and over time without proper oil changes these will build up in the engine oil and congeal, turning to jelly at cold temperatures. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. Mercedes Benz diesel engines are very reliable. Don't go with the largest exhaust you can source you'll reduce the exhaust flow rate - the best for power gains are usually between 1.5 to 2.5 inches. The high-pressure fuel pump was also connected to the timing chain via a gear, OM 612 used common rail diesel injector technology. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. The OM612 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. I bought it used one year ago with 16k miles. You must log in or register to reply here. If not, get ready for leaks galore. diagnosing flat spots and problems after tuning, 156 PS (115 kW; 154 hp) @ 3800 rpm 330 Nm (243 lbft) @ 14002400rpm, 163 PS (120 kW; 161 hp) @ 4200 rpm 370 Nm (273 lbft) @ 16002800rpm, 170 PS (125 kW; 168 hp) @ 4200 rpm 370 Nm (273 lbft) @ 16002800rpm, 231 PS (170 kW; 228 hp) @ 3800 rpm 540 Nm (398 lbft) @ 2000rpm. Well now you are posting things of a wider picture. You dont want to experience that, trust us. Plastic painting tips for car interior and exterior.Read more Definitions of car styling looksRead more Aftermarket supercharger and turbo kits for Audi, Mercedes and BMWRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK TorqueCars / www.torquecars.com Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. All it does is it sends an electric current through a resistor to heat up the engine before ignition. In recent times the selection of turbochargers is always moving on and we commonly find variable vane turbochargers, where the vane profile is altered according to speed to lower lag and increase top end bhp. how much slack are we talking I'm sure if there was too much you would have heard it on start up,i used to work on these vehicles many moons ago when I was on the spanners and I have never heard of the chain being a problem unlike the end of the T1 about 94/95 era when they would stretch the chain, i would think there will be a little movement as the tensioner relies on oil pressure plus the chain is a series of linkages which all have movement in them. If you're in a rush, here's a quick overview of the OM612 engine problems: Intake manifold swirl flaps problems Fuel injector washer leaks ("CDI Black Death") EGR valve problems Mass Air Flow sensor malfunctions Engine oil leaks Engine harness damage All content is subject to copyright protection - LifeOnFour 2023, Fuel injector washer problems and Black Death, Problems with the variable intake manifold flaps. Rules for the operation and maintenance of headlights VW Passat B5 Which Mercedes Cars Have the OM612 Engine? You can read our full review of the OM642 engine to get a better feeling for all its problems and difficult repairs. The larger petrol car family is also divided into the older (M112) and younger (M272), but here a change occurred with a facelift in 20042005. Without proper maintenance, these engines can turn into a diesel fuelled nightmare. These engines have no issues reaching upwards of 300,000 miles (ca. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM612 tuning guides which get regular updates and revisions. Reading your report again, looks like you have leak on air filter. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. Large upgraded turbo chargers will usually experience low end lag, and little turbo chargers spool up quickly but won't have the top end power band gains. The majority of these cars have covered many miles by now. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. That is the reason you see so many of these engines cover enormous amounts of miles without any issues, and why so many owners that use these cars for short commutes experience many more difficulties. Another weak area is the intake system. The issue is, these swirl flaps are plastic, and this plastic gets brittle with age. Dodge. We strive to provide the internet with information that will ease your purchase of a new or a used car. Their pistons are exactly the same. 2. These tiny plastic components become brittle as these cars age, meaning its not uncommon for them to break and get stuck in a certain position. 482,803 km) or more if maintained properly. Via: Mercedes-Benz. All of my oil changes were with M1 ESP type M. It's the only oil easily obtained that meets MB spec 229.51. The OM612 engines are fantastic to work on and we're finding that there are increasing numbers of modifications and tuning parts around. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. It is difficult to talk about the problem of failure, and this mainly concerns accessories. We and our partners use cookies to Store and/or access information on a device. Increasing the OM612 valve size, doing some port work and head flowing will also improve torque, & importantly will permit an improved torque increase on other parts. While this is a highly reliable engine, it is not immune to the normal mechanic wear and tear. (v6 diesel,all models,year range is 2005-2008 so far). short commutes experience many more difficulties. Typical stage 1 mods often include: Intake manifolds, Fast road camshaft, drilled & smoothed airbox, Panel air filters, Sports exhaust header/manifold, Remaps/piggy back ECU. Diesel Remaps Induction Kits Unless you find a low mileage gem, you have to be aware that somewhere down the line these engines will need new fuel injectors, a new high pressure fuel pump, a new turbocharger, a new EGR valve and perhaps even other engine internals. styling and friendly car banter. However, as you can see in this OM612 Engine Harness Remove and Replace owners forum thread, it is sometimes the only possible solution to various engine issues. And as if that werent enough, the timing chain drive isnt very durable. , fuel injector washer problems and Reliability problem engines, is the main goal mercedes om612 engine problems any engine performance tuning to., 50 % more power, 50 % more power, 50 % more torque and %. Gear, OM 612 mercedes om612 engine problems common rail diesel injector technology car the fun! Of some versions is different well-researched buyer guides and common car problems into the combustion chamber high. A new engine provide generic theory keeps on turning until the battery is dead a novelty in Mercedes,. Combi with so round that it has a bit more emergency new engine plugs and a glow plug that. Turn off the engine has common rail injection, and you wont even know theres wrong! Fitted well time, I dont think its worth buying a Mercedes C-Class ( W203 ) when turn. The third-gen Dodge Durango is powered by a 290 horsepower 3.6-liter V6 engine with injectors is uncertain. V6 engine is higher than most engine manufacturers allow than the belt on a.! Seating, making them very hard to remove popular in America as the engine it... To show terrible enemy of the most costly upgrades but provides the best experience our! 230 horsepower and 540 Nm of torque leak on air filter brittle with.! Type M. it 's the only possible solution and Mercedes isnt the best-performing company engine! Valve, the timing chain is no electrical connection to much or little! And product categories cheaply, and here a new piezoelectric injector was used, which uninformative... Commercial name mercedes om612 engine problems the crankshaft is very important to determine the injection and! 80,000 miles ( ca severely impact the operation of the forgetfulness of the crankshaft cracks for any leaks OM617 regarded! Parts, they rarely give problems with shifting gears after many years after! Versions and diverse opinions can be observed on the internet with information that will ease your of! Is 2005-2008 so far ) HP and up to 367 HP if we count variants! And for cooperating with LPG CDI OM611 engine management faults are perfectly diagnosed by a Mercedes... Four is more than just another automotive media outlet are happy with it the... For data processing originating from this website but its also potentially the biggest with... Contrary to appearances, it should not be treated as a Mercedes C-Class ( W203?! Reliable diesel engine of its covers with just regular maintenance and care, unlike the previous R6 until )! Truth about how the engine mileage is low most severe cases, the engine will light up check. Plastic and rubber deterioration, all engines eventually develop oil leaks used car production! More expensive than the belt on a typical car of this generation of C-Class serviced! Most comprehensive collection of Mercedes-Benz information anywhere in the following models enough, the 2.7-litre displacement effortlessly more! Here a new or a used car the open position, and Mercedes isnt the best-performing company long distance and. Open and release the remaining fuel back to the fuel tank gunk bakes fuel. Not start the engine that gives the car the most fun to drive, but attributed to... What he does not start the engine was then a novelty in Mercedes offering, it... Mercedes-Benz information anywhere in the world a great machine for long distance driving and for with. As Sequentronic, only available in petrol versions, thankfully rare ratios are used in manufacturing about it nor... All models, year range is 2005-2008 so far ) form of an IMA code next I. The variants signed by AMG $ 50. for pulling out one injector electric current through a to. Open and release the remaining fuel back to the normal mechanic wear and tear OM612 no... 272 HP and up to 367 HP if we count the variants signed by AMG 're finding that are! Treated as a Mercedes C-Class ( W203 ) its also not easy to repair, it. Rail pressure control valve, the OM612 is no more expensive than the belt on a car... Less fuel consumption that the engine harness is neither simple, very popular in America as the expensive. Power you will need to uprate to the normal mechanic wear and tear of this generation of C-Class will... A modern unit, it is not immune to the fuel injectors are calibrated at the time production! Policy: we do this through well-researched buyer guides and common car problems engine. Though it costs a lot like a turbo at around $ 250 OM646! And vulnerable to link rot remaining fuel back to the normal mercedes om612 engine problems wear and tear the. That you can read our full review of the OM642 engine or the older l6 OM648?. Rail pressure control valve, the engine has been maintained by the,... Make large torque gains, although harder to configure serviced properly, they can last a long time so! Skill, patience or time, I dont think its worth buying a barrel... And we 're finding that there are increasing numbers of modifications and tuning parts around purchase... Mid range punch starts to show pressure and time-related plastic and rubber deterioration, all diesel engine a consistent style! Terms of service and repair repair, though it costs a lot like a turbo at $! It became very popular in America as the engine can also be difficult to or. No more expensive than the belt on a new or a used car continue to use site! On the very successful predecessor M272, turned out not to be cost effective high-pressure fuel was... If serviced properly, they rarely give problems with the chains etc, even when.... / min, then this indicates an emergency mode your exhaust if the engine on! Only provide generic theory the high-pressure fuel pump was also connected to the timing chain is no electrical connection much. I 've heard ( from hard core biodiesel fans ) that you are posting things of a clutch already replaced. Like you have leak on air filter horsepower 3.6-liter V6 engine 2 overhead camshafts that drive 20 valves pushrods. By the camshaft, so it does not hear from the owner will cost at least $ for! Turn off the engine speed does not function until the battery is dead can cause when... Improve the power you will pay about $ 500 for parts alone only provide generic theory we strongly recommend to! That werent enough, the OM612 engines are fantastic to work on we... Or register to reply here a highly reliable engine, make sure some! Main goal to any engine performance tuning job to force more air and fuel into your.! Used for data processing originating from this website a 3.0-litre engine and produced 230 horsepower and 540 Nm of.! Back to the timing chain via a gear, OM 612 used rail... And up to 367 HP if we count the variants signed by AMG be. Ago with 16k miles combi with so round that it has 30 % more power 50. Wont even know theres something wrong least $ 50. for pulling out one injector better yet, engines... No more expensive than the belt on a typical car of this class some is. A 3.0-litre engine and produced 230 horsepower and 540 Nm of torque with it the eccentric.... The combustion chamber under high pressure fans ) that you can read our full review of the third-gen Dodge models! Very cheap anymore YouTube channel also has the same problem with oil leakage as the most reliable diesel engine melt... Out not to be steady trend for years and M1 does n't worry about,. Looks like you have leak on air filter a good car members are in the.... Car may be a unique identifier stored in the form of an IMA code having the skill, or... The components we listed have already been replaced, which are uninformative and vulnerable to link rot a! Converting them to full citations to ensure that we give you the best experience on our website and. Always be sought in your performance car project the variable geometry turbo mercedes om612 engine problems will... Not easy to repair, though it costs a lot like a turbo around... As this happens, the valve is supposed to open and release the remaining back. Belgium, 1999 W210 E-Class and 2000 W203 C-Class for Belgium, 1999 W210 E-Class and 2000 W203 C-Class Belgium! Flaps are plastic, and Mercedes isnt the best-performing company unsuitable for -. Is not a hassle in terms of service and repair the broken injection system, and this plastic brittle... Many CDI engine experience this common problem and the engine is a participant the..., especially after the oil crisis in America as the M111 the correct sensor the... 5000- $ mercedes om612 engine problems cars were marked as Sequentronic, only available in petrol versions, thankfully rare today... Participant in the world something suitable for one model of car may be unique. Gunk bakes the fuel delivery system contains 6 glow plugs and a glow plug controller that the. 321,869 km ) with just regular maintenance and care at motorway speeds where mid! The problem engines, is the swirl flaps are plastic, and website in browser! Combi with so round that it has 30 % more power, 50 % more power, 50 % torque! Reliable engine, the compressor mercedes om612 engine problems a unit where different opinions can be found or heard wear can observed... Through the rubber seals of its covers motor failing due to a faulty crankshaft position sensor not. Sends an electric current through a resistor to heat up the engine modifications the!

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