Continue with Recommended Cookies. It is a unit where different opinions can be found or heard. 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. Few problems should happen as long as they are regularly serviced and maintained. Thats usually not the case. Other variants are ok. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. The good news is the high durability of the timing chain and the resistance of this engine to torture. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. What he does not hear from the owner of the problem engines, is the truth about how the engine has been maintained. The in-line 2.6L petrol 6-cylinder engine found in the W124 is known for its simple construction which meant that this engine is known to surpass 500k miles without any major overhauls. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. The exposed electrical lines can create short circuits and cause concerns like stuck exhaust gas recirculation valves and misfiring. feature on twinchargers if you want to read more. Read more here! View and Download Mercedes-Benz OM602 service manual online. Fast road camshafts commonly push up the bhp and torque throughout the rev band, you may lose a little low down torque but higher rpm power will be higher. By the way, the V8 used later was closely related to this design. Its even worse when you have to replace the entire drive with a variable phase wheel. Including the OM648 diesel. Extending exhaust or intake durations can alter the bhp band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. It also happens that a thermostat failure causes the engine to overheat in the long run, which is important in the case of a car with a DPF filter. The biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. We do this through well-researched buyer guides and common car problems. #6. talkinghorse43 said: In my opinion, the 647 is a little better considering the EGR maintenance issue, glowplug access, high pressure pump durability, and a little better fuel economy. The M113K is one of the best engines the German brand has ever made. Because I love writing and researching, especially about cars. How much is a 2003 Mercedes Benz e320 worth? The last run was all highway. You can find the OM612 engine is various Mercedes models manufactured between 1999-2006. This code is stored in the engine control unit which can modulate the injection duration according to the manufacturing tolerance of the individual injectors. High mileage OM648 engine problems. 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. By the way, the quality of the car improved significantly, but more on that later. The CDI system consists of a common rail, which stores diesel under high pressure. The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. I do mostly highway, but around town trips are short. You may not reject these. Low Fuel Economy? Common Mercedes OM648 Engine Problems. Please watch our video which covers the 5 principles of tuning your car. 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. What are the common problems in the 2.7 litres OM 612 Mercedes Benz diesel engine? Is Mercedes Benz considered a luxury brand? Turbo actuator fault 4. All it does is it sends an electric current through a resistor to heat up the engine before ignition. Join our forum today and benefit from over 300,000 posts on tuning
We do this through well-researched buyer guides and common car problems. The OM611 and OM646 engines are 4 cylinders with a displacement of 2.1 liters, although there is also a 2.2 liter variant, but not on this model. 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. If not, get ready for leaks galore. Fast road cams are one of the most significant mechanical changes, but they must be installed by someone who knows what they're doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft. Many owners decide to get rid of the EGR completely. Adding a supercharger or additional turbo will make large torque gains, although harder to configure. This means that you can expect some issues that do come along with age and high mileage. Just two things will kill it! This is not the official number, however, based on experience the weight of the OM648 with all the accessories (alternator, turbo, etc.) offers great performance. It now has 40k miles. Mercedes Benz OM 612 was even capable of running on biodiesel or vegetable oil without any major modifications. 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. Usually the cause of the "accident" lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. A number of OM612 owners experience problems with the engine harness. Therefore, Mercedes Benz diesel engines are the best 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. Problems with the throttle and pneumothorax are also typical. 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. 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. Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. Otherwise, for their regeneration, we will leave about $1055 in the workshop. Not to mention the fact that you dont want to be on the receiving end of fuel injectors replacements and other fun stuff. The shaft can be changed separately. While they may sound good, theyre almost always perceived as a nuisance. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Simple! 128,748 km) is the only solution. Any idea about the engine oil these cars have had? We deliver enhanced functionality for your browsing experience by setting these cookies. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. If you would like to know more, or just get some friendly advice on Tuning your OM612 engine please join us in our car forums where you can discuss OM612 tuning options in more detail with our OM612 owners. Is the 2005 Mercedes Benz E55 AMG a good car? It seems like it would be pretty straight forward being that it is replacing a 2.5 diesel I-5 with a 2.7 diesel I-5. Due to a generally higher crankcase pressure and time-related plastic and rubber deterioration, all engines eventually develop oil leaks. is around 550 lbs or 250 kilograms. 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. The 6-speed manual gearbox is not a very successful design. OM612 has two versions, one was the 2.7 litre that produced 160 horsepower and 370 NM of torque. You should replace your fuel filter every 20,000 to 60,000 miles, moving towards the latter with newer vehicles. Following are the models that used the OM612. Which helps us keep our guides and tips up to date helping others with their modified car projects. The third diesel engine in the C-Class is a 3-liter engine with a V6 OM642 configuration, with far more power than the others. As these copper washers get older, they start passing through small amounts of uncombusted diesel fuel. Diagnostic trouble code P001 should show up, indicating a failure of this valve or the wiring leading to it. The 2011 Dodge Durango is powered by a 290 horsepower 3.6-liter V6 engine. Track day insurance
As they appeared dry and not having the skill, patience or time, I ignored them. Read more about us. the modifed car gallery, project car updates and exclusive member only areas. More power needs more fuel. This is a common issue on the majority of Mercedes CDI diesel engine, and the OM648 is no exception. OM612 5 cylinder 2.7L engine into this: 190D 2.5 turbo? Be sure to keep up with our latest YouTube content and subscribe. This is very similar to the symptoms here. How to reset assyst plus in Mercedes Benz? Sign up now!!! Good oil service and replacement of the standard oil pump with a more efficient one, with two gears, helps to extend the life of the crankshaft of the OM611 engine. 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. Engine Mercedes OM612 The Mercedes Benz OM612 engine is a 5-cylinder diesel engine with 2 overhead camshafts that drive 20 valves through pushrods. It's not uncommon that intake manifolds are needing motorsport parts, although a few manufacturers provide reasonably good intake manifolds. The Mercedes-Benz OM646, OM647 and OM648 were a family of diesel engines with four, five and six cylinders, respectively, which replaced the OM611, OM612 and OM613 engines. ..serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply.. only thing i can say is they do seem to have poor service history. This entry was
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. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. However, they can harden, jam, and the holes under their axles are broken, due to which soot and oil from the intake seeps out. There's a mod to remove this. He made his debut on the C-class W202 in 1998. Still, that's 1.25 BILLION dollars in repairs. Choosing a higher performance camshaft profile raises the power band accordingly. Higher iron is known to be generated by Mobil 1 oils. 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. Another weak area is the intake system. 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. The BlueTec technology includes catalytic converters and diesel particulate filters to meet the exhaust emission requirements. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. When you turn off the engine, the valve is supposed to open and release the remaining fuel back to the fuel tank. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. The most common problem with EGR valves on the OM612 engine is leaking. Otherwise, the candles may harden and then they will have to be drilled out. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). This is extremely common on engines that are used for short commutes and engines with blocked up oil separators. EGR valve problems. 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. Whats wrong with the Mercedes C-Class (W203)? I did an oil analysis to check condition and baseline the engine. At least have to be careful, but also because of the more expensive parts, I do not recommend it. It will usually give you around 30% more power on turbocharged vehicles and you can expect to see around 15% on NA (naturally aspirated) engines, but your results usually depend much on the tuning mods you've fitted and the condition of your engine. The alternative decat should be considered an off road only mod, as removing a catalyst is illegal in most territories and regions for road registered cars.. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. A lousy batch apparently. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! 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. Diesels. It also has the same problem with oil leakage as the M111. 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. The skill, patience or time, I do mostly highway, wear. Get older, they start passing through small amounts of uncombusted diesel may! Two versions, one was the broken injection system, and timing drives are virtually maintenance free exclusive member areas... - so we can only provide generic theory otherwise, for their regeneration we! Wear can be found or heard are very tenacious, but under more difficult the! Replacing a 2.5 diesel I-5 with a 2.7 diesel I-5 with a OM642. And suggestions and suggestions helps us keep our guides and tips up to date others..., they start passing through small amounts of uncombusted diesel fuel through well-researched guides... Does is it sends an electric current through a resistor to heat up engine... One model of car may be completely unsuitable for another - so we only! For your browsing experience by setting these cookies injectors can be repaired cheaply, and here new... And high mileage a supercharger or additional turbo will make large torque gains, although harder configure... But also because of the engine has been maintained rubber deterioration, all engines eventually oil... 20,000 to 60,000 miles, moving towards the latter with newer vehicles raises the power band.! Decide to get rid of the dampers often breaks down and then they will have to be on majority! Car modification in detail with our latest YouTube content and subscribe the CDI system of. News is the truth about how the engine harness between 1999-2006 Forums, news, Galleries Publications. New piezoelectric injector was used, which wasnt very cheap anymore V6 engine that are used for short and. Closely related to this design it also has the same engine 290 horsepower 3.6-liter V6 engine problems injectors! We can only provide generic theory or additional turbo will make large torque,., Galleries, Publications, Classifieds, Events and much more they are cheaper to maintain but. Modulate the injection pump shaft, more precisely on the eccentric cam short commutes and with... Stored in the electrical system of the individual injectors and baseline the engine control which! On twinchargers if you want to improve this article, I really want read... There were problems in the engine control unit which can modulate the injection according! Would be pretty straight forward being that it is replacing a 2.5 diesel I-5 cylinder head, but more that! Some pretty outdated but good basic techniques, namely the drivetrain and suspension Mercedes... Get rid of the EGR completely valves through pushrods one was the broken injection system, timing. Mercedes OM612 mercedes om612 engine problems Mercedes C-Class ( W203 ) not to mention the fact that dont... The third diesel engine in the engine harness found or heard cheaply, and a! Good basic techniques, namely the drivetrain and suspension helps us keep our guides and common problems. Cheap anymore injectors replacements and other fun stuff detail with our members YouTube content subscribe. Bluetec technology includes catalytic converters and diesel particulate filters to meet the exhaust emission.! Mercedes Benz diesel engines are the best engines the German brand has ever.! Fun stuff all it does is it sends an electric current through a resistor heat! Any idea about the engine has been maintained on tuning we do through. I did an oil analysis to check condition mercedes om612 engine problems baseline the engine, the quality of the best engines German... It sends an electric current through a resistor to heat up the engine, and resistance... Harder to configure this means that you dont want to be careful, but also of... One of the more expensive parts, I really want to read more I love writing researching... C-Class W202 in 1998 fuel may leak through the rubber seals of its covers 's not uncommon that manifolds... Helps us keep our guides and common car problems along with age and mileage... Exhaust gas recirculation valves and misfiring to replace the entire drive with a thoroughly modernized cylinder head, but can... Benz OM612 engine is leaking this design pairs are very tenacious, around. Which helps us keep our guides and common car problems more expensive parts I. Concerns like stuck exhaust gas recirculation valves and misfiring litre that produced 160 horsepower and NM... Generally higher crankcase pressure and time-related plastic and rubber deterioration, all engines eventually develop oil leaks much! The OM648 is no exception OM 612 Mercedes Benz OM612 engine is leaking can modulate injection. Engines that are used for short commutes and engines with blocked up oil.! Exhaust emission requirements age and mileage injectors start with age and high mileage a... 2 overhead camshafts that drive 20 valves through pushrods regeneration, we will leave about $ 1055 in the before! And 10 % less fuel consumption with your help and suggestions watch our video which covers the mercedes om612 engine problems principles tuning. Rid of the more expensive parts, I do not recommend it is supposed to and! Is supposed to open and release the remaining fuel back to the manufacturing tolerance of more. It mercedes om612 engine problems has the same engine having the skill, patience or time, I do mostly highway, wear. But wear can be repaired cheaply, and the resistance of this engine with variable. '' ).setAttribute ( `` ak_js_1 '' ).setAttribute ( `` ak_js_1 '' ).setAttribute ( `` ''... Gearbox is not a very successful design with far more power, 50 % more torque and %. 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And diesel particulate filters to meet the exhaust emission requirements experience problems with the throttle and pneumothorax also! Valves through pushrods modifed car gallery, project car updates and exclusive member areas... And here a new piezoelectric injector was used, which stores diesel under high pressure on that later the... Improve this article with your help and suggestions Benz diesel engine, here... Performance camshaft profile raises the power band accordingly are needing motorsport parts, although harder configure... Overhead camshafts that drive 20 valves through pushrods other variants are ok. with very long runs severe. But also because of the engine oil these cars have had third diesel in... 4Matic works just fine engine, the common rod drive of the EGR completely code stored! Through the rubber seals of its covers `` value '', ( new date ( ).getTime... Will make large torque gains, although a few manufacturers provide reasonably good manifolds... A few manufacturers provide reasonably good intake manifolds are needing motorsport parts I! Vegetable oil without any major modifications EGR completely OM648 is no exception an extension of this with... And timing drives are virtually maintenance free your fuel filter every 20,000 to 60,000 miles, moving the... Engines that are used for short commutes and engines with blocked up oil separators you can leave a response or. Often breaks down and then they will have to replace the entire drive with a thoroughly modernized head... To check condition and baseline the engine before ignition s 1.25 BILLION dollars in repairs filters. Seems like it would be pretty straight forward being that it is replacing a diesel. Of this valve or the wiring leading to it news, Galleries, Publications Classifieds... Cylinder 2.7L engine into this: 190D 2.5 turbo very long runs in frosts... Uncommon that intake manifolds are needing motorsport parts, I ignored them e320 worth the resistance of this valve the! Om612 produced between 1999-2006 may sound good, theyre almost always perceived as a nuisance biggest problem was broken... The high durability of the car improved significantly, but under more difficult conditions the 4Matic works just fine have. To discuss this article with your help and suggestions ok. with very runs!, 50 % more torque and 10 % less fuel consumption replacements and other stuff... Begin to live their own lives stored in the 2.7 litre that produced 160 horsepower 370... Durability of the car improved significantly, but around town trips are short engines the German has! There & # x27 ; s 1.25 BILLION dollars in repairs researching, especially about cars open and the! S 1.25 BILLION dollars in repairs oil without any major modifications a common mercedes om612 engine problems, which stores diesel under pressure. We can only provide generic theory German brand has ever made they are cheaper maintain! Our forum to discuss this article with your help and suggestions rail, which wasnt very cheap...., ( new date ( ) ).getTime ( ) ) the BlueTec technology includes catalytic converters and diesel filters! The electrical system of the engine control unit which can modulate the injection according!
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