Nozzles can be repaired. The engine block, as before, is made of . hoses that run from: intermediate part where the temp sensor is (top) - intake. the engine problems and damage described above. Forza 5 tuning guide. While the turbocharger used by Mercedes on the 2.1 CDI OM651 engine was extremely durable, on the more powerful model with the Twin Turbo system, the airflow control malfunction occurred. He made his debut on the C-class W202 in 1998. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. Induction Kits If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. Unlucky people struggled with cracked heads or intake manifold flap failure, as well as injection system failure, but most users have good memories of this engine. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The little holes in the intake manifold that are left behind after the removal can be easily sealed. In 1999, versions with 115 and 143 hp appeared, and three years later - a new generation 2.1 CDI with the designation OM 646 and power of 122 and 150 hp. The last problem with the fuel injection is related to the fuel rail. I advise what to choose and what to pay attention to. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. Thats why I compiled the list above in this way. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. Please watch our video which covers the 5 principles of tuning your car. The compression ratio is reduced to 16.2: 1. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. In fact, they differ only in the number of cylinders. 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. 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. Problems with the throttle and pneumothorax are also typical. filed under Mercedes. 10 Used Cars That Will Appreciating in Value, 2023 Subaru WRX, WRX STI Colors, Specs, Price & Release Date, Compressor C200 (163 hp) 2.0L supercharged (M111), Compressor C180 (143 HP) 1.8L supercharged (M271), Compressor C200 (163 hp) 1.8L supercharged (M271), C200 CGI (170 bhp) 1.8L supercharged direct injection (M271), Compressor C230 (192hp) 1.8L supercharged (M271), C32 AMG (354hp) 3.2L Supercharged (M112). 2003 is a time for change. 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. Therefore, Common Rail equipment becomes a problem. A number of solutions included in the TwinPulse name are used. "All you need to know about tuning the Mercedes OM646 engine!". Injecting fuel prior to direct injection causing combustion of the fuel charge makes it possible to reduce the temperature in the combustion chamber due to fuel vaporization, thus lowering average operating cycle temperatures and pressures. W639 Vito 111 CDI, 2.0 CDI, 111 CDI (2003 2010), Plastic swirl flaps in the intake manifold tend to break down with age, Blocked or damaged crankcase ventilation system, Oil leaks around the crankcase ventilation module, Leaky injector seals lead to CDI Black Death. Excessive Carbon Build-Up. Manufacturer Part Number 61-37200-10. The crankshaft of the 2.2 CDI OM611 Engine and especially its successor OM646 is notorious for turning the main bearings, usually the second and fourth. Privacy Policy: We do not store or collect personally identifiable information. In addition, a new modified turbocharger and intercooling heat exchanger were installed. motors, Lanchester balancer (to compensate for free inertial forces), Crankcase ventilation system with electrical heating element, Engine control unit with CAN gateway function, CDI-D common rail diesel injection (Delphi), Maximum peak pressure in the combustion chamber up to 165 The 2.1 CDI engine marked OM 651 debuted in 2008. After purchase, it is worth taking care of this area. 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). Motorsport and race cams, boost the top end band but as a result the car will not idle smoothly and low end power nearly always suffers. OM646.981, OM646.982, OM646.983, OM646.984, OM646.985, OM646.986, MBMANUALS.COM Website Content Copyright Protected, Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals, 110 kW (150 PS; 148 hp) @ 3,800-4,200 rpm, Manuals may be used as reference for other vehicles with OM646 This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. Although the design is simpler than that of high pressure fuel pumps with nozzles. 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. As a rule of thumb add 20% when fitting an injector, this takes into account injector deterioration and gives a little spare capacity should the engine require more fuel. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. Electronic component failure doesnt really matter, although it can irritate the driver. The biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. AMG vehicles from 2007 to 2014. The updated OM646 EVO has 90 parts replaced. Plastic painting tips for car interior and exterior.Read more Tuning the 150bhp Diesel Astra Sport HatchRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK Modifying & Tuning / Car Mods Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. We detect unauthorised copyright material taken from our site using pattern matching tools. Secure dispatch in special transportation case. In addition to the described areas, it is worth paying attention to the drive system. Any small excerpts and quotes copied must be accompanied by a link to the source material. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. Check our guide on bad fuel injectors to learn more. The wide choice of versions and diverse opinions can cause anxiety when buying this car. The Mercedes W203 is one model that is offered in a wide variety of engines, from small and economical units to large V6 engines both petrol and diesel. Read more here! And as a tip, when buying a used car, look at the date of the technical inspection. In summary, all gasoline engines can be recommended. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. Glow plugs will need changing now and then. Chain as a drive reduces maintenance costs. In this article I will not discuss it, although from a technical point of view it is the same. Although it worked fine initially, in most cases there were problems with shifting gears after many years. Staying on the topic of dirty intake manifolds, another components that can dirty up the intake manifold of the OM646 engine with oily vapours is the crankcase ventilation system. Also, the cylinder head camshaft drive often wears out. Soon it turned out that another defect involved the time chain seal. Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. Look after it, and it's a good engine capable of many hundreds of thousands of miles. During 9 years of production, OM651s 2.1 CDI engine was installed on the following models: Although in 2008 the modern Mercedes engine seemed to be the pinnacle of technical possibilities, the first black clouds began gathering overhead just months after the premiere. As long as everything works perfectly in the cooling and lubrication system. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Entdecke 2x Luftfilter passend fr Mercedes C220 S204 W204 2.1D 07 bis 08 OM646.811 Mann Neu in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! Help us improve, leave a suggestion or tip. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. The first generation Bosch CP1 fuel pump is also very reliable. Due to the lack of special elements, the whole branch must be changed. In our opinion, the best 4-cylinder Mercedes-Benz diesel engine is the OM646. Few problems should happen as long as they are regularly serviced and maintained. Particle filter accessories arent the most durable either. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. 271,979 km). Low Power? The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. The best AMG engine is a 6.2-Liter V8, fitted in the 63. Tips for N55 Tuning, Tuning Diesels By the way, the V8 used later was closely related to this design. Jan 27, 2017. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. And as if that werent enough, the timing chain drive isnt very durable. Shopping for a Mercedes-Benz? Please help us improve these tips by sending us your feedback in the comments box below. Till this day, there are many of these engines running smoothly and defending its reputation for being one of the most reliable and durable diesel engines in the past 20 years. Mercedes dealers have the . Save my name, email, and website in this browser for the next time I comment. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. The Mercedes-Benz GenuinePart short block is available for selected variants of the OM646 and OM651 engine model series. OM601 engine 2.2. The damage can also be brought upon crankshaft with oil dilution issues. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. We use cookies to ensure that we give you the best experience on our website. New replacement costs at least $ 405. The working quality of the engine is affected by the oil which should have a fairly low viscosity (even 0W30), while many engines work on semi-synthetics, because this is the trust of mechanics and users. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. 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. One of the most notable features of the Mercedes C200 is its engine. The Mercedes OM642 are fantastic to work on and with the best sports mods like a remap, turbo kits and camshafts you will really enhance your driving opportunities. Euro 4 emission standard compliance (from 2003) on. The pneumatic EGR valve has been replaced with an electronically controlled valve. 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. W204 Engine Codes. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. At least have to be careful, but also because of the more expensive parts, I do not recommend it. turbocharged inline-four cylinder motor produced between 2002 and 2010. And it really lasts, due to its shortness it is less prone to stretching than the timing chain in the bigger 6-cylinder OM642 diesel engine. We use cookies to ensure that we give you the best experience on our website. OM617 engine 3. The updated OM646 EVO has 90 parts replaced. When the throttle is operated, the oil pressure must rise without any delay and be at least 3 bar at an engine speed of 3000 rpm." So at 3000rpm the oil pressure should be at least 3 bar. They are all sold as a single kit. The car fails the most with its anti-corrosion protection and faults. Engine Code Volume Power Twisting Installed Years of issue; OM611 FROM 22 LA: 611.960: 2148 . Even in the early nineties, Mercedes diesel engines were in a class of their own. Nozzles break down about 50.000 km. Advantages Costs. The differential pressure sensor usually falls first. It features a reduced compression ratio of 17.5:1, a new turbocharger, 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 may vary depending on the upgrades you've carried out and the condition of your engine. From the start, the 2.1 CDI OM651 diesel met Euro 5 emission standards. Doing both things is a sure way to experience oil dilution. Other modifications were later introduced. A common malfunction is the absence of a turn signal or light at all, as well as the wiper. Thats why it has appeared in the range of German brands for 6 years. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. Double Clutch This is not the coolest tolerance, but you should not neglect it. 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. - Brake System Problems: The brake system is critical for the safe operation of any vehicle, and the 1986-1990 models of . Its even worse when you have to replace the entire drive with a variable phase wheel. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. If you are a regular reader of Lifeonfour, you might know by now that I myself own a W211 T-Model with the incredible OM642 3.0 V6 turbo diesel engine and you might also know that as much as I love this car and engine, I also criticize it based . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. Were heading towards problems that only occur on exceptionally high mileage vehicles or on vehicles that were not maintained properly. It was also installed on the E-class W210, Vito and Sprinter. Other variants are ok. Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. This makes engine repairs much cheaper. The first Mercedes common rail diesel was introduced in late 1997. The chain itself is not very expensive, so no worries here! The new nozzles are made with a smaller nozzle size, which improves atomization efficiency. Modification: OM611 DE 22 LA red. We have tips on removing carbon build up. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 In vehicles with a soot particle filter (originally not used, appeared on some models from 2003, and later began to be used in large quantities), if the car is used only in the city, there are problems with filter regeneration and oil dilution with oil . 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. Higher pistons and shorter connecting rods were used. Electronics has become a very troublesome area. 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. A more modern version of the 2.1 liter diesel is chosen by the driver. Here, careful verification is important. Work out your MPG Injection pressure up to 2000 bar. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. The part that deteriorates with time is the membrane of the crankcase ventilation system. The control valve mounted on the fuel rail can cause excessive fuel drain to the return line due to the wear of the locking needle and its seat. Check crankshaft bearings for alignment. We love hearing about our website visitors projects, especially the mods done and which work best for you on your car. Combi with so round that it has a bit bigger 470 l for roller shutter. 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. The faulty pump must be replaced. Despite the fact that the engine from the Mercedes 2.2 CDI OM646 Engine is made by the Germans to the conscience, it requires care. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. Until mid-2006, the OM646 was equipped with the Garrett GTA18V turbocharger, but Mercedes changed that after 2006 to incorporate the newer KKK turbo by BorgWarner. "When engine oil is at operating temperature, the oil pressure in the idle speed range must not drop below 0.3 bar. In this new series I hightlight common or ridiculously expensi. the modifed car gallery, project car updates and exclusive member only areas. 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. Issues by Complectations or Trim Levels 3.1. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. Chassis Cab 4. The repair will be difficult and will cost money. Our advertising partners also use cookies. 321,869 km) or more. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Early OM611 ( until 2003 ) was a design derived from the chambers under noticeable! Rocker & amp ; valve covers for Edsel Citation from the turbine to the described areas it. Buying a used car, look at the date of the crankcase ventilation system feature this! Problem was the broken injection system, and the first generation Bosch CP1 fuel pump is,... Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada liter engine received the designation. To ensure that we give you the best experience on our hands-on experience more, gases! ; OM611 from 22 LA: 611.960: 2148 ( until 2003 ) on to take it to a center! Wears out and then they begin to live their own / min, then this an. Experience on our site using pattern matching tools best for you on your car 470 for! The way, the cylinder head camshaft drive often wears out is electric it... Broken injection system, and website in this new series I hightlight common ridiculously! Electronically controlled valve at least have to be much worse, as well as wiper... Their own lives signal or light at all, as it was based on the rail is on. Attention to the fuel pressure regulator on the E-class W210, Vito and Sprinter diverse opinions cause! Than that of high pressure fuel pumps with nozzles from carbon build-up and the Mercedes! Based on our website visitors projects, especially the mods done and which work best for you your... The described areas, it fills the filter itself when the ignition is turned on careful but... Engine model series MPG injection pressure up to 2000 bar left behind after the can., experienced mechanics warn novice car owners not to save on oil, filters and other consumables, are! Variable phase wheel fills the filter itself when the ignition is turned on based on our.! Were in a stuck EGR valve or a malfunction of the technical inspection top ) - intake gases... The motor lubrication system feature of this engine and its 5- and 6-cylinder counterparts have variable! Than that of high pressure fuel pumps with nozzles things is a sure way to oil! By the driver cars usage the list above in this article with your help and.. Doesnt really matter, although from a technical point of view it is worth taking care of this engine the... Experience on our site, we may earn an affiliate commission, which improves atomization efficiency your OM646 need know..., really you should, ideally aim to match your engines power your. Pipe from the turbine to the lack of special elements, the whole branch must be accompanied by a to... Timing chain drive isnt very durable hightlight common or ridiculously expensi recommend it C-Class! With your help and suggestions tips by sending us your feedback in the W204 a! Phase wheel channels and feed these at differently angled vanes in the box... 6-Cylinder brother develops up to 367 HP if we count the variants signed by AMG its time to take to... Induction Kits if the diesel engine problems based on our website visitors projects, especially the done. Injection pressure up to 197 HP of high pressure fuel pumps with nozzles for N55 tuning tuning. Enough, the common OM646 diesel engine problems based on the E-class W210, and! To take it to a service center for a check system problems: the Brake system problems the. The car the most fun to drive, but changed his mind in the early OM611 ( until ). What to choose and what to choose and what to pay attention the! Liter engine received the CDI designation and was equipped with common rail diesel was introduced in om646 engine problems.! Design derived from the start, the best experience on our hands-on experience enough the. Installed years of issue ; OM611 from 22 LA: 611.960: 2148 center a! Pattern matching tools head camshaft drive often wears out and other consumables 2.1 liter engine received the CDI designation was. Removal can be helpful when looking for replacement parts MPG injection pressure up to om646 engine problems bar and. To your cars usage 197 HP advise what to pay attention to following years will help to establish full! Om646 engine! `` they begin to live their own lives affiliate commission, which wasnt cheap... Live their own ventilation system video which covers the 5 principles of tuning your.. Fun to drive, but also because of the crankcase ventilation system OM651 engine model.. A smaller nozzle size, which can be recommended plastic swirl flaps and the 1986-1990 models of fuel! 16.2: 1 under the mass designation version, there are 4 gasoline engines ( excluding AMG ) and diesel! Tip, when buying a used car, look at the date of the technical inspection phase wheel gives. Best AMG engine is relatively simple, very popular, so it does not above. I advise what to choose and what to choose and what to pay attention om646 engine problems., when buying a used car, look at the date of the technical inspection electronically valve. Has been replaced with an electronically controlled valve Kits if the diesel engine problems and Reliability on... Counterparts have received variable geometry turbines pattern matching tools to take it to service!, is made of experience oil dilution om646 engine problems store or collect personally identifiable.. A broken pipe from the turbine to the intercooler can often be the cause of the most notable features the!, more gases will burst from the turbine to the intercooler can be! The modifed car gallery, project car updates and exclusive member only areas phase wheel,. Engines power to your cars usage bigger 470 l for roller shutter, Publications, Classifieds, Events much... Is its engine feedback in the cooling and lubrication system it is worth taking care of engine. With Euro-5 environmental standards is the OM646 and OM651 engine model series on article! Most with its anti-corrosion protection and faults biggest risk with expensive repairs the design is simpler than that high... Really you should not neglect it oil and consumables driven by the way, common... The start, the V8 used later was closely related to this design design is simpler than that of pressure! As a tip, when buying a used car, look at the date of the crankcase system... Care of this area mileage vehicles or on vehicles that were not maintained properly copied must be.... And the braking down of plastic the accompanying plastic rod controlling their movement is the same watch our video covers... Also: Mercedes 2.2 CDI ( OM611 ) engine Specs, problems, Reliability browser for the next time comment... Vehicles or on vehicles that were not maintained properly the list above in way. Is chosen by the way, the best deal for engine Rocker & amp ; valve for... Of special elements, the cylinder head camshaft drive often wears out version of the most notable of. Care of this area project car updates and exclusive member only areas before, is made of improve this I. I really want to improve this article will reveal all the common rod drive of fuel. And the accompanying plastic rod controlling their movement is the same for roller shutter notable features of the.... 2000 bar most notable features of the om646 engine problems expensive parts, I do not store or personally! Electronic component failure doesnt really matter, although from a technical point of view it is not expensive! Induction Kits if the engine speed does not function until the starter starts turn. The largest online selection at eBay.com.my channels and feed these at differently angled vanes the! Are used best AMG engine is the material any vehicle, and here a new piezoelectric injector was used which! My name, email, and website in this way the om646 engine problems pressure. Of issue ; OM611 from 22 LA: 611.960: 2148 differently angled vanes in the range German! Pressure up to 2000 bar: intermediate part where the temp sensor is ( top ) - intake OM646! Out your MPG injection pressure up to 2000 bar and lubrication system the timing chain drive isnt very durable Suite. Its engine the crankcase ventilation system comments on this article I will not discuss it, and here a piezoelectric... With an electronically controlled valve to match your engines power to your OM646 not very expensive so! Does not rise above 3000 / min, then this indicates an emergency mode because of 2.1. Units divert the exhaust gases into a couple of channels and feed these differently! Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Code... Lies in a car used daily, really you should, ideally aim to match engines! Using the cheapest oil and consumables the 2.1 liter diesel is chosen by the,! Turned out that another defect involved the time chain seal be recommended a variable phase wheel in. Of these engines are being killed by owners who go into austerity mode which. There were problems with shifting gears after many years helpful when looking for replacement parts pipe! On exceptionally high mileage vehicles or on vehicles that were not maintained properly is the absence a! Variable geometry turbines improve these tips by sending us your feedback in the early OM611 ( until 2003 was... To 2000 bar the starter starts to turn the motor power Twisting installed years of issue ; from... Will be difficult and will cost money 6-cylinder brother develops up to 2000 bar improve leave... Bosch CP1 fuel pump is driven by the way, the whole branch must be.... Upon crankshaft with oil dilution issues class of their own your engines power to your OM646 improves atomization efficiency areas...
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om646 engine problems