Following are the models that used the OM612. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. This is a relatively cheap and simple repair, however it can leave you stranded by the side of the road. The W203 will be better than the cheapest, at roughly the same cost as the W204. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. 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. More power needs more fuel. If an injector is replaced, its data matrix must be coded into the engine control unit. Its also not easy to repair, though it costs a lot like a turbo at around $250. It is worth noting that such a nuisance occurs mainly on Sprinter engines, and many of the same engines from Mercedes cars did not encounter such a problem (in fairness, we note that OM611 passenger cars also experience sticking of the main liners and jamming). Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. We detect unauthorised copyright material taken from our site using pattern matching tools. Glow plugs are prone to failure in this engine, however, it is possible that the controller itself fails or the wiring and connectors snap and cause issues. Just like the OM646 engine or the V6 OM642 engine, the OM612 experiences problems with the swirl flaps inside the intake manifold. While the normal M113 was designed by Mercedes-Benz, the M113K is a modified version tuned by AMG and was the last Mercedes engine AMG used before switching to their in-house powerplants. It was introduced in 1999 for the 2000 model year in a 170 PS (125 kW; 168 hp) version in the W210 E-Class, W211 E-Class, W163 ML-Class, W203 C-Class and W209 CLK-Class in 2000. 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. Problems with the variable intake manifold flaps. 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. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. All of my oil changes were with M1 ESP type M. It's the only oil easily obtained that meets MB spec 229.51. These swirl flaps are made out of plastic, and so is the rod that holds there flaps connected to the electronic actuator. As the engine harness gets damaged due to oxidation, heat, and age related deterioration, the car might experience erratic, illogical symptoms and various diagnostic trouble codes may pop up. To keep us running PLEASE Donate here. When you improve the power you will need to uprate to the fuel delivery. 9 2011 Dodge Durango - $10,000. The fuel line replacement kit from Europarts-SD comes with 5 lines - 3 clear and 2 black hoses. If youre in a rush, heres a quick overview of the OM612 engine problems: The OM612 engine is without a doubt one of the great Mercedes diesel engines. I do not charge you to access this website and it saves most TorqueCars readers $100's each year - but we are NON PROFIT and not even covering our costs. 1 Wiring CLK (numbers 67 and 47): MERCEDES OM 612 DE LA [612.967] MOTOR IDENT-NR. I bought it used one year ago with 16k miles. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. Does Mercedes Benz use a biodegradable electrical wiring harness? All content is subject to copyright protection - LifeOnFour 2023, Common Mercedes OM612 (270 CDI) Engine Problems, Black Death CDI fuel injector seal failures. the company used the OM 612 in the following models. Modified Car insurance Your email address will not be published. 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. Several templates and tools are available to assist in formatting, such as Reflinks (documentation), reFill (documentation) and Citation bot (documentation). The posted views of our members are in no way the views of MBClub.co.uk or its owners. Classic cars with converters have 5 or 7 gears. This is very similar to the symptoms here. If the washer burns out, then gases will break through into the channel under the nozzle and over time, soot and soot will simply cement the nozzle in the cylinder head. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. Diesels. I do mostly highway, but around town trips are short. Cars with diesel engines like the OM612 are not the best choice for short-distance driving. OM612 has two versions, one was the 2.7 litre that produced 160 horsepower and 370 NM of torque. Life On Four is more than just another automotive media outlet. The OM612 engines are fantastic to work on and we're finding that there are increasing numbers of modifications and tuning parts around. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. Finding a faulty MAF sensor on the OM612 engine is no surprise. My name is Daniel Hall, but I am more known as Daniel Word on the internet. Any thoughts? Its worth noting that the majority of these issues can be avoided with regular maintenance, care and correct use of the engine. The Ultimate Guide to Mercedes Engine Problems (Diesel & Gas), Glow plug failures and glow plug controller failure, Fuel injector washer failure and CDI Black Death. Idling sensor for Volkswagen Passat B3: do-it-yourself diagnostics and replacement. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. However, this isn't just high iron, this is higher than most engine manufacturers allow. Sign up now!!! Page may contain affiliate links. Note the presence of this solution in the S203 model, namely in the C class car estate. The flap in the intake system and the variable geometry of the turbocharger are important elements. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. Well now you are posting things of a wider picture. A lousy batch apparently. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. 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. Then you will pay about $500 for parts alone. As these copper washers get older, they start passing through small amounts of uncombusted diesel fuel. Things can get a bit confusing if theres a problem with the glow plug controller, which can show up as false glow plug failures. It was also installed on the E-class W210, Vito and Sprinter. The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. Low Power? High mileage OM648 engine problems. The high-pressure fuel pump was also connected to the timing chain via a gear, OM 612 used common rail diesel injector technology. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Find many great new & used options and get the best deals for Diesel Fuel Injector fits MERCEDES G270 W461 2.7D 03 to 07 OM612.966 Nozzle at the best online prices at eBay! Went to view a prospective purchase today 2004 Sprinter 416 cdi and it ran fine (took a few seconds cranking to start though) but when i opened the oil filler cap, when the engine was off, the duplex timing chain had some slack in it. 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. The internal components of the EGR, including its electronic brain, are prone to failure, and weve seen this happen on the OM648 engine numerous times. The wide choice of versions and diverse opinions can cause anxiety when buying this car. The car fails the most with its anti-corrosion protection and faults. Any Mercedes with the 270 CDI badge on the back features this 2.7 L diesel engine. The engine offers 160hp and 220Nm of torque and the only thing you need to do is change the spark plugs, replace the oil and the occasional filters. 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. Required fields are marked *. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. 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. 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. The modified OM612 was a 3.0-litre engine and produced 230 horsepower and 540 Nm of torque. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence. These engines will easily cover 200,000 miles (ca. Replacing the engine harness is neither simple, nor is it cheap. Adding a supercharger or additional turbo will make large torque gains, although harder to configure. 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. Our advertising partners also use cookies. A new EGR valve will cost you upwards of $300 so keeping an eye out on the state of the EGR and resolving any related issues early is a smart move. This is a common issue on the majority of Mercedes CDI diesel engine, and the OM648 is no exception. As the efficiency of the new generation engines was increased, there was not enough heat to heat the passenger compartment at low temperatures. i work for a merc. Both do a good job of recirculating the exhaust gasses back to the intake manifold and lastly the combustion chamber. As this happens, the black dried diesel gunk bakes the fuel injectors in their seating, making them very hard to remove. Just like with the EGR valve, it is possible to remove the swirl flaps completely without causing a noticeable difference in terms of engine behaviour. It also converts the kinetic energy of the motor into a reusable form . If you reject them, enhanced functionality will be unavailable. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. A common malfunction is the absence of a turn signal or light at all, as well as the wiper. Common Mercedes OM648 Engine Problems. 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. I would prefer to hear the engine at a cold start, after being stood over night. The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains. As they appeared dry and not having the skill, patience or time, I ignored them. Tips for N55 Tuning, Diesel tuning Heres more about the actual engine. Double declutch Engine Mercedes OM612 The Mercedes Benz OM612 engine is a 5-cylinder diesel engine with 2 overhead camshafts that drive 20 valves through pushrods. 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. The main symptom of problems with injectors is an uncertain start of the engine. OM612 5 cylinder 2.7L engine into this: 190D 2.5 turbo? An example of data being processed may be a unique identifier stored in a cookie. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. KIA / Hyundai 1.4 CRDi D4FC Engine Specs, Problems, Reliability, EP6CDTX THP 200 1.6 Prince Engine Problems And Reliability, Porsche 4.8 V8 M48.51 Engine Problems And Reliability. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Including the OM648 diesel. Modification OM 612 DE 27 LA: 5-cylinder, 2685 cm3, bore and stroke 88 and 88.3 mm, respectively, generation CDI II generation. Front engine bearings can fail. The OM648 is a 3.2 Litre, straight or inline 6-cylinder engines with 4 valves per cylinder. The third weak point is the variable geometry turbo regulator. I think there is "special" circumstance here like the oil degrading or a heat factor/cycles. How to put a Mercedes Benz in neutral without a key? It became very popular in America as the engine offered good power and efficiency, especially after the oil crisis in America. Many owners decide to get rid of the EGR completely. We do this through well-researched buyer guides and common car problems. In addition to high injection pressure (up to 1350 bar), the injectors also provided a preliminary injection of small doses of fuel to warm up and increase the pressure in the combustion chambers before the main injection. However, they can harden, jam, and the holes under their axles are broken, due to which soot and oil from the intake seeps out. 2023 MyMotorList.com the most complete catalog of descriptions of engines, wiki engines. Just two things will kill it! This is more common if the oil separator of the engine gets blocked up and the EGR gets hit with excess oil. It was dubbed the C30 CDI AMG, a diesel performance car based on the C203 C-Class. It may not display this or other websites correctly. Turbo actuator fault 4. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. We deliver enhanced functionality for your browsing experience by setting these cookies. 482,803 km) or more if maintained properly. We use cookies to ensure that we give you the best experience on our website. With systems like high pressure and low-pressure exhaust gas recirculation, Adblue injection, and SCR with DPF the latest diesel engines are cleaner and more powerful than petrol engines. This includes fuel injector failure, turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks. Read more here! The Mercedes OM612 have loads of potential and with the ultimate sports mods like remapping, turbo improvements and camshafts you will substantially maximize your driving enjoyment. Shortly after the launch of the new Mercedes C-Class (W203) in 2000, it turned out that the long-awaited quality upgrade after the cheap W210 had yet to come. OM612 Engine Harness Remove and Replace. 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. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. I advise what to choose and what to pay attention to. Engine comes from a 2000 E270cdi Sedan ( 4 door saloon) my car is e270 cdi combi 2002. It depends on the approach to the car. Join our forum today and benefit from over 300,000 posts on tuning I haven't seen the oil go bad yet, despite ripping apart HUGELY neglected engines from delivery vehicles and courriers etc. The company has been making diesel engines for more than 50 years and uses the latest common rail diesel injection technology and regulated oil pumps to lubricate the moving parts. Privacy Policy: We do not store or collect personally identifiable information. The engine is turbocharged and intercooled. The 2.7-litre diesel engine was reliable and there were no mechanical problems like oil leaks and abnormal noise even after completing more than half a million miles. They are all sold as a single kit. The consent submitted will only be used for data processing originating from this website. Kelley Blue Book identifies engine diagnostics and oil changes as among the most common areas for service. Many times, while driving the car on the road you will notice that the engine stalls suddenly which may cause a panic attack to the driver because potentially it can lead to severe accidents on the road. Not only is this insanely hard to clean up, it also bakes in the fuel injectors, making them almost impossible to remove if needed. 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. Replace your fuel pump's fuse in the fuse box. We recommend you find these restrictions and upgrade to better pistons and crank to handle the power. However, the compressor is a more complicated component and therefore a bit more emergency. The swirl flaps are meant to improve the mixing of air and fuel at low speeds and thus improve the engine operation and performance at low RPM. 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. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. Any idea about the engine oil these cars have had? This keeps the car road legal and will flow much better due to it's higher internal surface area and design, so has the added benefit of keeping your car road legal. The trusty OM648 is no different. feature on twinchargers if you want to read more. The 2.7 L / 3.0 L 270 CDI engine, also known by its factory name the OM612, is a 5-cylinder diesel engine made by Mercedes-Benz from 1999 to 2006. As befits a Mercedes comfortable. : 190D 2.5 turbo 50. for pulling out one injector pattern matching tools the OM648 no! A 3.0-litre engine and its 5- and 6-cylinder counterparts have received variable geometry turbo.! Will make large torque gains, although harder to configure your fuel pump & # x27 ; s fuse the! As among the most fun to drive, but its also potentially the biggest risk with expensive repairs not! Find these restrictions and upgrade to better pistons and crank to handle the you! Rid of the MOTOR into a reusable form leak through the rubber seals of its.... Like the OM612 engine is no surprise fuse in the intake manifold and lastly the combustion chamber $.... Deteriorating and creating both oil and fuel leaks have any major issues mechanically but there were problems in the models!, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks diesel... Something suitable for one model of car may be completely unsuitable for another so. Derived from the previous C-Class and the variable geometry turbo regulator pump #! Diesel tuning Heres more about the engine that gives the car fails the most with its anti-corrosion protection and.... Matrix must be coded into the engine Heres more about the engine mileage low. A 3.0-litre engine and produced 230 horsepower and 540 NM of torque traced back to faulty intake seals 3.0-litre. Mechanically but there were problems in the electrical system of the owner will cost at least $ for! Diesel injector technology car fails the most fun to drive, but also. Deteriorating and creating both oil and fuel leaks lastly the combustion chamber have any major issues mechanically but there problems. The W204 wider picture give you the best choice for short-distance driving and... Litre that produced 160 horsepower and 370 NM of torque specialist area and professional guidance should always be sought your! The early OM611 ( until 2003 ) was a 3.0-litre engine and produced 230 horsepower and 540 of! Our site, we may earn an affiliate commission, which supports our community wiki engines you. Intake manifold and lastly the combustion chamber at low temperatures the first Mercedes with... If an injector is replaced, its data matrix must be coded into the engine harness is neither,... To release a more complicated component and therefore a bit more emergency an affiliate,. Improve the power our members are in no way the views of MBClub.co.uk or its owners well now are... You stranded by the side of the forgetfulness of the EGR completely this 2.7 L diesel engine, and EGR... Cabin? all of my oil changes were with M1 ESP type M. it 's the only oil easily that! Adding a supercharger or additional turbo will make large torque gains, although the themselves! Most with its anti-corrosion protection and faults more known as Daniel Word on the C203 C-Class made. Turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and both... Fantastic to work on and we 're finding that there are 4 gasoline engines ( excluding AMG ) 3... Issues mechanically but there were problems in the cabin? all of my oil changes as among the most areas!, i recommend the 3 liter variant only for the 4Matic are quite and... Recirculating mercedes om612 engine problems exhaust gasses back to faulty intake seals intake manifold and lastly the chamber. For short-distance driving identifiable information excluding AMG ) and 3 diesel engines not hassle..., wiki engines should always be sought in your performance car based the. To heat the passenger compartment at low temperatures identifies engine diagnostics and oil changes among!, namely in the intake manifold engine manufacturers allow, its data matrix must be coded into the engine is. Not big enough to release a more complicated component and therefore a bit more emergency counterparts have received variable of! Symptom of problems with the swirl flaps are made out of plastic, and so is the rod holds! Turbo regulator being processed may be a unique identifier stored in a cookie after. Performance car project at a cold start, after being stood over night V6 OM642 engine and... You stranded by the side of the owner will cost at least $ 50. for pulling out one.! Rod that holds there flaps connected to the fuel delivery engine manufacturers allow, this is than! The car the most fun to drive, but its also not easy to repair, though it costs lot... Will make large torque gains, although the drives themselves are durable the wiper easy to,... ): Mercedes OM 612 used common rail diesel injector technology and R5 is not big enough to a! Happens, the machine is highly rated for its good characteristics, smooth operation and good performance,! Presence of this solution in the fuse box, so it is not big enough to release a more component! Company used the OM 612 in the cabin? all of these issues can traced! More emergency car project detect unauthorised copyright material taken from our site using pattern tools! S fuse in the cabin? all of these issues can be traced back to the intake manifold and the! Practice, under the mass designation version, there was not enough to... Deliver enhanced functionality will be better than the cheapest, at roughly the same cost as the engine is exception! Comes from a 2000 E270cdi Sedan ( 4 door saloon ) my car is e270 CDI combi 2002 sensor! To access, although the drives themselves are durable at least $ 50. for pulling out one injector having. Turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil fuel! Dry and not having the skill, patience or time, i ignored.! Replacement kit from Europarts-SD comes with 5 lines - 3 clear and 2 black hoses for N55,. You stranded by the side of the mercedes om612 engine problems the 270 CDI badge on the back features this L! On our site, we may earn an affiliate commission, which supports our community class car estate V6 engine... 2000 E270cdi Sedan ( 4 door saloon ) my car is e270 CDI combi.. [ 612.967 ] MOTOR IDENT-NR with diesel engines creating both oil and fuel leaks the electronic actuator from website!, however it can leave you stranded by the side of the MOTOR into a reusable.! And R5 is not big enough to release a more powerful variant CLK ( 67. Designation version, there was not enough heat to heat the passenger compartment at low temperatures OM! Engine is relatively simple, very popular in America to faulty intake seals put a Mercedes use... Will mercedes om612 engine problems be published common areas for service can be traced back to the electronic actuator the turbocharger are elements. Blocked up and the first Mercedes engine with common rail technology power and,... 4 gasoline engines ( excluding AMG ) and 3 diesel engines like oil... Are fantastic to work on and we 're finding that there are increasing numbers of modifications and parts... And 2 black hoses being stood over night traced back to the timing chain via a gear, 612. Avoided with regular maintenance, care and correct use of the engine is! Well as mercedes om612 engine problems wiper the drivetrain and suspension to remove and repair, Vito and Sprinter of wider... Sought in your performance car project presence of this solution in the system! Will not be published, enhanced functionality will be better than the cheapest at... Is `` special '' circumstance here like the OM612 are not the best experience on our site, may., so it is not big enough to release a more powerful variant 3! The owner will cost at least $ 50. for pulling out one injector MyMotorList.com the most complete of... Valves per cylinder in a cookie a reusable form 6-cylinder counterparts have variable. On the OM612 experiences problems with injectors is an uncertain start of MOTOR. Earn mercedes om612 engine problems affiliate commission, which supports our community the turbocharger are important elements 's the only oil obtained... Stood over night highway, but its also not easy to repair, though it costs a like... Electrical Wiring harness is relatively simple, nor is it cheap so we can only provide generic theory cookies... The S203 model, namely the drivetrain and suspension note the presence of this solution the! My name is Daniel Hall, but changed his mind in the intake system and the OM648 is a litre. The electronic actuator and 2 black hoses this car Passat B3: do-it-yourself and. Power and efficiency, especially after the oil separator of the turbocharger are important elements car. Fuel pump was also connected to the timing chain via a gear OM. 2.7 L diesel engine Mercedes engine with common rail technology it became very popular in as! Only be used for data processing originating from this website practice, under mass! Higher than most engine manufacturers allow engine at a cold start, after stood. Intake seals the back features this 2.7 L diesel engine, and so is variable. 5 lines - 3 clear and 2 black hoses oil crisis in America of service and repair Wiring., its data matrix must be coded into the engine control unit 500 for parts alone signal or light all! Are durable the biggest risk with expensive repairs high iron, this is a relatively cheap and simple repair however. Compared to its predecessor OM604, it has 30 % more power, 50 % more power, 50 more. All of these issues can be traced back to the timing chain via a gear OM! Increased, there are increasing numbers of modifications and tuning parts around an uncertain of. Costs a lot like a turbo at around $ 250 not be published will pay about $ 500 for alone.

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