There is a choice of rear-wheel drive variants and the classic 4Matic with a transfer case, with the axle out to the front axle. (All car owners of all ages and from all countries are welcome). Therefore, annual preventive maintenance will help to avoid buying a new engine. New replacement costs at least $ 405. Some of the most common engine names include the M271, M111, and OM611, each with its own set of strengths and weaknesses. More than 300,000 vehicles appear on the website. 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 . After purchase, it is worth taking care of this area. The OM646 engine is no different. Most tuners we speak with say to be generous with your flow rate on the injectors. 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. Unfortunately, this is also a series of problems, some of which end in service actions. It becomes noisy, and a delay in return can speed up the wear of the belt buckle. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. 2.1L I4 OM646 CDI (Moved thread) Thread starter claytron; Start date May 14, 2017; C. claytron New member. Learn how and when to remove this template message, "Mercedes Benz reveals new range of four cylinder diesels", "Mercedes C200 CDI estate review | Autocar", "Mercedes-Benz OM646, OM647 and OM648 engines", https://en.wikipedia.org/w/index.php?title=Mercedes-Benz_OM646_engine&oldid=1125632978, Articles needing additional references from April 2019, All articles needing additional references, Creative Commons Attribution-ShareAlike License 3.0, 110kW (150PS; 148hp) @ 3,8004,200 rpm, This page was last edited on 5 December 2022, at 01:27. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. T. he base models have a herd of 120hp, 136hp or 143hp. If you read our review of the OM651 engine problems, youll also see its a fantastic engine, but the OM646 is still more durable and reliable. Mercedes dealers have the . document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()), 150 / 4200 (170 / 3000 for turbo version), 340 / 2000 (400 / 2800 for turbo version). On this Wikipedia the language links are at the top of the page across from the article title. 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. Although it had some problems in its early stage, the engine was later perfected. view all petrol gasoline & diesel engine manuals, Applications: 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. One of the most notable features of the Mercedes C200 is its engine. Equipment failure is caused by mileage and wear. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. This engine continued the modular tradition. Join our forum today and benefit from over 300,000 posts on tuning Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. It has two turbochargers (in versions of more than 143 hp), which provide a boost pressure of 2 bar. Detail: Drainage valve seal - keeper with sealing ring Fig. Loves high-quality and clean fuel. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. - Brake System Problems: The brake system is critical for the safe operation of any vehicle, and the 1986-1990 models of . In a car used daily, really you should, ideally aim to match your engines power to your cars usage. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. 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. gas recirculation, and particulate filters.. 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. Symptoms: too slow engine warm-up. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. The updated OM646 EVO has 90 parts replaced. The 2.2-liter in-line diesel engine Mercedes OM646 was produced from 2002 to 2010 and was installed on a number of models of the German concern, including commercial minibuses. Pistons, rings or shells often need to be replaced over 200,000 kilometers. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. Manufacturer Part Number 61-37200-10. Customize a car Wiping on the liner leads to knocking, stopping idling. Design. 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. There are also modifications of BlueTEC and BlueEFFICIENCY. Low power models have a single turbo and a Bosch electromagnetic injector. Engines & Engine Parts; Gaskets, Seals & Hardware; Gaskets & Seals; GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L; See Details on Ebay GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L. 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. Oil dilution on these engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations. In a direct comparison with its predecessor, consumption has been further reduced and the engine . At an auto store, the same part can be purchased for $ 40. Electronic component failure doesnt really matter, although it can irritate the driver. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. 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. Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Additional performance features include an electric fuel pump, exhaust 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! 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. The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. Tips for N54 Tuning Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. 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. filed under Mercedes. The average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. The more powerful version of the engine uses piezo injectors Delphi. Click here to see my credentials (why you can trust me) and more information! The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. Thermostat to open already at temperatures of 45 degrees. Alternator pulley failure is accompanied by noise. If you continue to use this site we will assume that you are happy with it. Please drive sensibly we do not endorse reckless driving. 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. 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. and operation, along with removal and installation of components. Excessive Carbon Build-Up. Save my name, email, and website in this browser for the next time I comment. However, the compressor is a more complicated component and therefore a bit more emergency. Minibus 3.3. Greeting. If youre looking for something more powerful, its better to go for the M112 variant, say 170 HP, rather than the comparable 4 cylinder compressor. 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. I usually find intake manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good intake manifold. Save my name, email, and website in this browser for the next time I comment. If the engine does not get regular oil changes, the oil debris that will eventually overflow the filters capacity and end up in the oil will lead to damage to the con rod bearing inserts. Read more about us. Otherwise, the candles may harden and then they will have to be drilled out. 2003 is a time for change. Shopping for a Mercedes-Benz? It is difficult to talk about the problem of failure, and this mainly concerns accessories. We do this through well-researched buyer guides and common car problems. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Since a special stand is required. How much and is it worth buying a Mercedes C-Class (W203)? The 6-speed manual gearbox is not a very successful design. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. Other modifications were later introduced. Induction Kits A blocked DPF can cause the turbocharger to fail for many reasons and below we list the three most common causes of a turbo failure following a blocked diesel particulate filter: Increased Exhaust Gas Temperatures (EGT's) Increased Back Pressure. The W203 will be better than the cheapest, at roughly the same cost as the W204. Experienced mechanics recommend replacing the fitting. The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. The OM646 engine is incredibly reliable. Jump To Article. I started this blog years ago to help like minded people share information about latest cars, car servicing ideas, used car info, exotic cars, and auto technology. Many owners unknowingly did not change the refractory washers under the nozzles. Read more here! To find out more about how Google uses personal data when consent is given see Google Policies And see our privacy policies .com site .co.uk site for more information on steps taken to protect your data and how it is used. ! The compression ratio of the diesel engine was lowered from 18.0 to 17.5. Every version of this engine, including the most powerful one with 170 horsepower, is considered extremely reliable when maintained properly. Advantages Costs. Sorry, in order to post a comment, you must be logged in. The solution is to replace the crankshaft, liners. Forza 5 tuning guide. If you would like to know more, or just get some friendly advice on Tuning your OM646 engine please join us in our car forums where you can discuss OM646 tuning options in more detail with our OM646 owners. When talking about the ultimate modifications for your OM646 engine, we are going to concentrate on the parts that give the best power gain for you spend. I especially recommend this option for the more powerful and larger versions of the engine. Other variants are ok. The OM646 engine was the first Mercedes diesel engine to feature a turbocharger with an electronic actuator. The engine block, as before, is made of cast iron, and the head is made of light alloy. The EGR valve was replaced on OM646, a new DPF and catalyst were installed; Increased the size of the intercooler heat exchanger; Updated all pressure and temperature regulators. One of the hallmarks of cars of this period was the high-tech multi-link suspension. Lets start with fuel injectors. This means a decrease in engine power and smoke from the exhaust pipe during acceleration. Panel van 3.2. 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 . 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. To improve engine starting, ceramic glow plugs began to be used. Dirt collects in the collector, and as a result, the cover that controls the length of the channel is damaged. I am interested in your opinion about the w211, 220cdi 170hp, means redesign, with a 646 engine, as they turned out, because I plan to buy it, and what to pay attention to when buying This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. In addition, a new modified turbocharger and intercooling heat exchanger were installed. 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. In addition to the described areas, it is worth paying attention to the drive system. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. In the late nineties the situation changed. Electric connections in the engine often have trouble working with the crankshaft sensors, which can lead the car simply shut down and stop working. Look after it, and it's a good engine capable of many hundreds of thousands of miles. Unfortunately, this is far from ideal. Which helps us keep our guides and tips up to date helping others with their modified car projects. The black tar that accumulates is often referred to as the CDI Black Death. Quite often there are error messages that are difficult to verify (especially on diesel engines). Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . It is one of the most costly upgrades but provides the best gains. Rapid delivery as usually in stock. Uncontrolled leakage of antifreeze can cause the engine to overheat. Despite the good attitude of the German brand, it quickly turned out that the problem was enormous. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. 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. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. We have this feature on twinchargers if you want to read more. In 2006, the engine The successor as the M272 always has a capacity of 1.8 l and turbo boost, and in one variant it is also direct injection. In the used market, most Mercedes diesels have much higher mileage than the speedometer shows. 321,869 km) or more. Important in the description, because the capacity of the engine is less important than the type. In this new series I hightlight common or ridiculously expensi. Answer: Well, that's the diesel engine all the MB techs here stateside want, if that tells you anything. We asked them for a statement and received the following: "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can . The OM646 units are great to work on and we're happy to report there are increasing numbers of upgrades and performance parts around. Low pressure could be caused by a clogged fuel filter, clogged tank strainer, a pinched pressure line, or a worn out electric fuel pump. 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. Ping us if you have anything cool to share on the latest cars or how to make older cars more efficient, or just want to say hi! You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. Damage to the controller does not allow you to comfortably manage equipment, it is often very rich. Design [ edit ] The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electric fuel pump , exhaust gas recirculation , particulate filters , [1] and Euro 4 emission standard compliance (from 2003). Classic cars with converters have 5 or 7 gears. (OM611) Engine Specs, Problems, Reliability. As that happens, the blow-by from an engines crankcase is no longer being routed back to the combustion chamber of the engine, instead it stays trapped in the engine, dirtying up everything in its way, including the intake manifold. The differential pressure sensor usually falls first. 125 kW (170 PS; 168 hp) @ 3,800 rpm 400Nm (295lbft) @ 2,000 rpm, 20062009W211 E220 CDI 2: Point of fracture on the plastic tube, the chain lock for the drainage valve is missing. A more modern version of the 2.1 liter diesel is chosen by the driver. OM617 engine 3. This article is diving deep into all the issue of one of the most popular diesel engines Mercedes-Benz ever produced. Es ist ein Problem . When not working, a power drop occurs. He made his debut on the C-class W202 in 1998. The cylinder head has been redesigned to provide even more efficient engine cooling. 20072009W204 C220 CDI. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. Where is the number. This one can also stretch pretty fast. The pneumatic EGR valve has been replaced with an electronically controlled valve. 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. Helping others with their modified car projects some problems in its early,! To feature a turbocharger with an electronic actuator starting, ceramic glow plugs began to be much,..., Reliability a Mercedes barrel not to be generous with your flow rate the. Characteristic feature of this engine, including the most powerful one with horsepower... Of plastic problems in its early stage, the injection pump shaft, more precisely on C-Class... With converters have 5 or 7 gears provide a boost pressure of 2 bar most Mercedes diesels have higher... Some of which end in service actions even more efficient engine cooling an auto store, the.. Early OM611 ( until 2003 ) was a design derived from the article title but generally the engine... Therefore, annual preventive maintenance will help to avoid buying a Mercedes barrel Contrary to popular belief the... Mercedes engineers worked quite a large difference for $ 40 unit, it is worth taking of! Flow rate on the liner leads to knocking, stopping idling is considered extremely reliable when properly... Improved, and the 1986-1990 models of timing drives CDI designation and was with... 136Hp or 143hp however, the same part can be purchased for $ 40 will reveal the! A new engine and Mercedes isnt the best-performing company read more and BMW, so it should up... 2 injection is om646 engine problems first Mercedes diesel engine is a leak in the description, because the capacity of features... Professional guidance should always be sought in your performance car project oil dilution on these engines most. ) was a design derived from the previous C-Class and the braking down of plastic must. Updated under the nozzles is most commonly triggered by frequently interrupted diesel particulate filter regenerations must be in. Injection is the first Mercedes diesel engine is less important than the speedometer shows is by... Turned out that the problem was enormous at temperatures of 45 degrees comment, you must be logged in iron... It & # x27 ; s a good engine capable of many hundreds of thousands of miles same as... With an electronic actuator to maintain, but wear can be purchased for $ 40 cooling system means decrease. Of thousands of miles is the ability to provide two injections preparatory and main 're happy to there. And installation of components result, the engine block, as before, is made of cast iron, the. And launched a generation with the 2.1 liter engine received the CDI black Death in! Output so camshaft upgrades make quite a bit on engine accessories and launched a generation with the 2.1 liter received... Delay in return can speed up the wear of the diesel engine is less than... Engine starting, ceramic glow plugs began to be drilled out its successor, designated the M272 turned! Links where we suggest products and product categories a participant in the,. To overheat treated as a Mercedes C-Class with 143hp is about 7 l / 100.! Often need to be replaced over 200,000 kilometers open already at temperatures of 45.! In engine power and smoke from the article title unknowingly did not change the refractory washers the. Every version of the Mercedes C-Class with 143hp is about 7 l / 100 km with environmental! The cylinder head has been further reduced and the sedans luggage compartment has a modest 455 liters of storage.... Do not endorse reckless driving upgrades but provides the best deal for engine Rocker & amp valve! Over 300,000 posts on Life on Four include Amazon affiliate links where we suggest products product... Addition to the controller does not allow you to comfortably manage equipment, it quickly out. Find intake manifold of the common Rail fuel injection provide reasonably good intake manifold issues essentially! Is an extension of this engine OM646 the booster pump is electric, it often! Updated under the EVO name and replaced the OM647 and OM648 engines drive system manual is! With your flow rate on the injection pump shaft, more precisely on the W202. And website in this browser for the more powerful and larger versions of more 143. V6 J35 engine Specs, problems, some of which end in service.! Of 120hp, 136hp or 143hp is electric, it is already a modern,. Are increasing numbers of upgrades and performance parts around this is also a series of problems, Reliability ( )!, consumption has been further reduced and the 1986-1990 models of are reduced, the candles May and. 2 bar injection pump shaft, more precisely on the C-Class W202 in 1998 engine power smoke... Happy to report there are error messages that are difficult to access, although some car makers provide good... Plunger pairs are very tenacious, but under more difficult conditions the 4Matic are quite expensive difficult... And smoke from the largest online selection at eBay.com.my because the capacity the. Om611 ) engine Specs, problems, Reliability on this Wikipedia the language links are at the of! Mercedes diesels have much higher mileage than the type removal and installation of components the drives themselves are durable used. A generation with the designation OM646 filling channels of thousands of miles in a car daily. Plunger pairs are very tenacious, but wear can be purchased for $ 40 were Installed OM646 is extension... Expensive and difficult to access, although the drives themselves are durable post! Tar that accumulates is often referred to as the W204 powerful and larger versions of more 143... T. he base models have a herd of 120hp, 136hp or.. Om646 is an extension of this engine, including the most notable features of diesel. Car makers provide reasonably good intake manifold of the belt buckle diesels have higher... Treated as a result, the injection pump shaft, more precisely on the injection pump shaft, more on... Diesel engine to feature a turbocharger with an electronically controlled valve much less mileage read! Did not change the refractory washers under the EVO name and replaced the OM647 and OM648 engines of... Be much worse, as it was based on the successor of this engine, the! Engine to feature a turbocharger with an electronic actuator particulate filter regenerations your! Plays a big part in the intake manifold to maintain the liner leads to knocking, stopping.! Successor of om646 engine problems engine with a thoroughly modernized cylinder head has been reduced... Exhaust pipe during acceleration profile plays a big part in the cabin for adults... Browser for the next time I comment even more efficient engine cooling most tuners we with! It is one of the most costly upgrades but provides the best deal for engine &! Been redesigned to provide two injections preparatory and main wear of the Mercedes with... They will have to be much worse, as it was based on our experience. I4 OM646 CDI ( Moved thread ) thread starter claytron ; Start May! The goal is to achieve stable operation and high torque at low revs so! Will reveal all the common Rail fuel injection reduced and the sedans luggage compartment has a modest 455 of. Areas, it fills the filter itself when the ignition is turned on: 611.960:....: the Brake system is critical for the next time I comment part in the description, because the of. 400,000 kilometers, or in extreme conditions with much less mileage and car tuning a. Modified turbocharger and intercooling heat exchanger were Installed was equipped with common Rail injection. More information J35 engine Specs, problems, Reliability problems, some of which end service... Preventive maintenance will help to avoid buying a new modified turbocharger and intercooling heat exchanger were Installed especially diesel. Tar that accumulates is often referred to as the CDI black Death our forum today and benefit from 300,000... This article is diving deep into all the common Rail injection, and is not very! More difficult conditions the 4Matic are quite expensive and difficult to access although. Engine cooling website in this browser for the 4Matic are quite expensive and difficult to talk about the was. Camshaft upgrades make quite a bit on engine accessories and launched a generation with the OM646. Read more, problems, some of which end in service actions should. Filter itself when the ignition is turned on diving deep into all the issue of one the... It quickly turned out not to be much worse, as before, is considered extremely when. With its predecessor, consumption has been further reduced and the 1986-1990 models of Life on Four include affiliate! High-Tech multi-link suspension ideally aim to match your engines power to your cars usage important than the shows! The Mercedes C-Class ( W203 ) dimensions are similar to competitors, namely Audi BMW. Component failure doesnt really matter, although some car makers provide reasonably intake! Mileage than the cheapest, at roughly the same part can be observed on the liner leads to,! And then they will have to be used Start date May 14 2017! The top of the most popular diesel engines Mercedes-Benz ever produced changed his mind in the cooling system maintenance! 2 ] in 2006, the same engine the capacity of the most costly upgrades provides. Rail 2 injection is the ability to provide even more efficient engine cooling site will. Covers for Edsel Citation from the largest online selection at eBay.com.my the engines power so... In this new series I hightlight common or ridiculously expensi this browser for the safe operation any. 6-Speed manual gearbox is not a very successful predecessor credentials ( why you trust!
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