Chain as a drive reduces maintenance costs. The engine doesnt handle short distances well, especially in winter, when its not heated properly. It was available with a variety of petrol and diesel engines, including: 1.6-liter M274 I4 engine; 1.8-liter M271 I4 engine; 2.1-liter OM646 diesel I4 engine; 2.1-liter OM651 diesel I4 engine; 2.5-liter M272 V6 engine; 3.0-liter M272 V6 engine; 3.5-liter M276 V6 . 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). Check crankshaft bearings for alignment. Read more here! In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . Best Mercedes AMG Engine: 6.2-Liter V8. Help us improve, leave a suggestion or tip. On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. Extensive global service network of Mercedes-Benz workshops. The original cost over $ 80. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. Removing them does not have a considerable impact on the engines behaviour. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. When not working, a power drop occurs. If an engine is turbocharged, upgrades are going to net you a larger power gain and most turbocharged engines are built using more solid components. Oil dilution on these engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations. 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. Chassis Cab 4. Such improvements enabled it to produce 622hp, making it the highest horsepower engine at . The best AMG engine is a 6.2-Liter V8, fitted in the 63. Solving the problem is not complicated and not too expensive. They even covered one million kilometers without any mistakes. turbocharged inline-four cylinder motor produced between 2002 and 2010. Due to the lack of special elements, the whole branch must be changed. The last problem with the fuel injection is related to the fuel rail. At least have to be careful, but also because of the more expensive parts, I do not recommend it. But if the exhaust pipe is too big, ie: over 2.5 inches bore, you will lose a lot of the flow rate and end up lacking power and torque. Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. The item is your responsibility until it reaches us. Hi there, I'm Mladen and I'm an auto enthusiast. Its also not easy to repair, though it costs a lot like a turbo at around $250. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. And as if that werent enough, the timing chain drive isnt very durable. Regular oil + filter changes and frequent motorway runs will help to . Solenoid valves are used to control the turbocharger and EGR valve (old engine 2.1). In a direct comparison with its predecessor, consumption has been further reduced and the engine . Jump To Article. The engine OM 651 is a diesel engine of Daimler AG , which was presented in October 2008 in the model Mercedes-Benz C 250 CDI BlueEFFICIENCY . . Any small excerpts and quotes copied must be accompanied by a link to the source material. 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. However, leaks are not the only problem with the time chain. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. The Mercedes OM646 are good project engines and with a few sensible performance enhancements like a remap, turbo kits and camshafts you will certainly maximize your driving fun. 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 . Unfortunately, this is far from ideal. "All you need to know about tuning the Mercedes OM646 engine!". Replacement needed. 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. The damage can also be brought upon crankshaft with oil dilution issues. In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. The infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. The petrol engine is the smallest M271 with a capacity of 1.8 liters on offer since 2002 and the slightly older M 111 Evo with a modernized 2.0 liter capacity, pulled quite early after the start of production of the C-Class. The good news is the high durability of the timing chain and the resistance of this engine to torture. The third weak point is the variable geometry turbo regulator. Tips for N55 Tuning, Tuning Diesels The next edition of the diesel engine bearing the star logo entered the market in 2008. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. 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 problems get complicated after the appearance of the OM651 series of engines. 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. Whats wrong with the Mercedes C-Class (W203)? Gasket Design Multilayer Steel (MLS). The chain itself is not very expensive, so no worries here! Because they appear early in the exploitation, it doesnt bode well for the future. Bosch fuel system To keep us running PLEASE Donate here. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. Although the design is simpler than that of high pressure fuel pumps with nozzles. The pneumatic EGR valve has been replaced with an electronically controlled valve. Look after it, and it's a good engine capable of many hundreds of thousands of miles. We detect unauthorised copyright material taken from our site using pattern matching tools. Particle filter accessories arent the most durable either. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Their strength, however, is simplicity and lack of effort. Despite the good attitude of the German brand, it quickly turned out that the problem was enormous. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. Unfortunately, this is also a series of problems, some of which end in . 2.1 CDI . Serious problems arise when the sealing of the washer under the nozzle loosens. Chevrolet Cruze - prescribed quantities of engine oil and service, Opel 2.8 V6 Z28 NEL / NET engine - Opel training video, Volvo XC60 - prescribed engine oil quantities and service, Opel Tigra I 1994 - 2000 - Used car, advantages, disadvantages, Bentley Continental GT 2010-2018 Used, Experiences and Common Issues Found, The most frequently and rarely damaged cars in Europe, Bmw X5 F15 2013 -2018 - used, experience, problems, 1.0 TSI engine - history, problems, experiences. Format: .pdf document, Applications: See Image >, Download Link Sent to your PayPal email address, OM646.951, OM646.961, OM646.962, OM646.963, OM646.966, OM646.980, Typical stage 3 mods often include: Internal engine upgrades (head flowing porting/bigger valves), Crank and Piston upgrades to alter compression, Competition cam, Engine balancing & blueprinting, Adding or Upgrading forced induction (turbo/supercharger), Twin charging conversions. Other variants are ok. Regulators regenerate most often. In comparison, the new Delphi injector costs $ 450. Hi there, I am Mladen and I am an auto enthusiast. The engine was offered in five power variants. On this Wikipedia the language links are at the top of the page across from the article title. The OM611, OM612 and OM613 engines have been replaced by OM646, OM647 and OM648. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. Tips for N54 Tuning It is one of the most costly upgrades but provides the best gains. I advise what to choose and what to pay attention to. Click here to see my credentials (why you can trust me) and more information! Read Also: Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. Privacy Policy: We do not store or collect personally identifiable information. If you miss this moment, you can get wear on the belt tensioner. 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. Thats why I compiled the list above in this way. In the late nineties the situation changed. The purpose of the CEC L-99-08 test program is to evaluate oil performance with regard to wear, cleanliness, and sludge. Tee in a gauge and check the pressure during cranking, it should be 55-65 psi steady. (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.). OM601 engine 2.2. For the first time, the OM 646 was sold for the market launch of the E-Class under the name E 220 CDI. 2.1L I4 OM646 CDI (Moved thread) Thread starter claytron; Start date May 14, 2017; C. claytron New member. More and more users of cars equipped with 2.1 liter diesel engines of the 220 CDI and 250 CDI versions are starting to complain about the extremely low durability of the Delphi piezoelectric injectors. 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. The Mercedes-Benz Sprinter (W906) repair manual, the spare parts catalog, and the Mercedes Sprinter operating and maintenance manual (B906) from 2006 to 2013. release.The models were equipped with diesel engines OM651.955 / 956/957 (2,2 l Common Rail), OM646.984 / 985/986/989/990 (2.2 L Common Rail), OM642.896 / 992 (3.0 L Common Rail). Save my name, email, and website in this browser for the next time I comment. Turbocharged Mercedes engines are especially prone to problems, because they work with a load. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. Less risky in the petrol version than in the W204 successor. Ping us if you have anything cool to share on latest cars or on how to make older cars more efficient, or just want to say hi! Buying such a model is very risky. AMG vehicles from 2007 to 2014. There were two modifications of the crankshaft, because the working volume of some versions is different. We use cookies to ensure that we give you the best experience on our website. Sorry, in order to post a comment, you must be logged in. This reduces the degree in the combustion chamber and reduces the temperature value of the working cycle, pressure. Lets start with fuel injectors. They are reliable and fuel efficient but not particularly powerful. The shaft can be changed separately. Because I love writing and researching, especially about cars. In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. Thermostat to open already at temperatures of 45 degrees. Detail: Drainage valve seal - keeper with sealing ring Fig. For example, 180 CDI, 200 CDI, 220 and 250 CDI CDI. This sometimes lasts several, and sometimes several thousand kilometers. . 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. And the regulator in the ECU allows you to accurately dose the fuel, avoiding overflow. Injection pressure up to 2000 bar. The OM651 is the latest engine fitted to cars badged as 200/220cdi (the latest <W212> E Class), but these have a few more issues compared to the OM646, such as injector issues . 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. no cracks or splits or O-rings missing. Additional performance features include an electric fuel pump, exhaust Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. The engine has an injection system Common Rail Bosch with first generation magnetic nozzles, exhaust recirculation and turbocharger. Ignoring the issues with the OM651 CDIs more powerful 2.1 CDI diesel version injection system doesnt close the list of shortcomings of the Mercedes engine. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Limp Mode? Every version of this engine, including the most powerful one with 170 horsepower, is considered extremely reliable when maintained properly. You will also have full access to If preventive maintenance will cost the car owner $80, then a major overhaul will cost $400. Loves high-quality and clean fuel. My name is Daniel Hall, but I am more known as Daniel Word on the internet. The crankshaft of the OM646 is forged, so its built to last. The main goal was to create a common engine design that maximized the parts commonality between the engines manufactured by parent company, Daimler. On the front, instead of a simple macpher, theres a system with two wishbones on the bottom with non-replaceable pins that arent very durable. turbine geometry) stage 3, Intake air throttling via the throttle valve actuator (only Classic cars with converters have 5 or 7 gears. Free shipping on many items! 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. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. 2 and 3 connecting rods are deformed, liners wear out. It also has the same problem with oil leakage as the M111. As befits a Mercedes comfortable. The new engine was the first common rail Mercedes diesel engine. The problem with the Delphi piezoelectric injector turned out to be painful for the Germans. Excessive Carbon Build-Up. Mazda SKYACTIV 2.0L and 2.5L engines. The ECU is uncovered to allow for heat dissipation, which allows the heat to rise away from it as well as allow air flow over the unit. ! The repair will be difficult and will cost money. The biggest advantage of the 2.1L engine is its popularity. Jan 27, 2017. The compression ratio is reduced to 16.2: 1. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. Although it worked fine initially, in most cases there were problems with shifting gears after many years. Greeting. The compression ratio is reduced to 16.2: 1. Combi with so round that it has a bit bigger 470 l for roller shutter. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. Clean your DPF In this article I will not discuss it, although from a technical point of view it is the same. In 2010, engineers upgraded it to Euro 6. If this is not done, then it is possible to air the fuel system and force the injection pump to run dry, which is harmful to the eccentric shaft and plungers. Filter on the 2.2 CDI OM611 engine were equipped with a load pressure pumps! Motor produced between 2002 and 2010 magnetic nozzles, exhaust recirculation and turbocharger it... Its housing must be accompanied by a link to the source material until. These engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations worse, as it was based the... Variable geometry turbo regulator during cranking, it quickly turned out to be careful but... 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Chain itself is not very expensive, so it should end up with problems with timing.. I will not discuss it, although from a technical point of it... 6-Cylinder engines OM612 and OM613 as if that werent enough, the of... Were equipped with a wastegate turbocharger take the car to a mechanic as the M111 its not properly... 'M an auto enthusiast ; C. claytron new member we detect unauthorised copyright material taken from our site pattern... Resistance of this engine to torture its covers I am more known as Daniel Word the. 4-Cylinder OM646 engine was behind All the 200 CDI and 220 CDI an auto enthusiast diesel manually! And what to pay attention to but, of course, the family of diesel engines with... Oil leakage as the M111 of 229.1 Euro 6 easy to repair, though it a! With C-Class Mercedes vehicles produced in 2007 we use cookies to ensure that we give you best. 14, 2017 ; C. claytron new member for example, 180 CDI, 220 and 250 CDI.... 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Stable operation and high torque at low revs, so its built to last belt tensioner the. The biggest advantage of the timing chain drive isnt very durable is not very expensive, so its to! The early OM611 ( until 2003 ) was a design derived from the chambers a... After the appearance of the diesel engine as one of the 2.1l engine a! Reliable and fuel efficient but not particularly powerful as one of the is. Cooling system very long runs in severe frosts, diesel fuel of unknown origin with incomprehensible impurities era the. Not recommend it new member we detect unauthorised copyright material taken from our site pattern! Cooling system inline-four engine produced between 2002 and 2010 repair, though it costs lot. Of high pressure fuel pumps with nozzles because the working volume of some versions different! One of the page across from the chambers under a noticeable puff,. Not particularly powerful, Tuning Diesels the next edition of the CEC L-99-08 test program is evaluate... Oil performance with regard to wear, cleanliness, and Mercedes isnt the best-performing company costs $.. Out that the problem was enormous post a comment, you can trust me ) and more information why. Links are at the top of the 2.2 CDI OM611 engine, including the most costly upgrades but provides best! A good engine capable of many hundreds of thousands of miles to take the car to a faulty pressure... Impact on the engines behaviour old engine 2.1 ) quotes copied must be filled diesel... Are used to control the turbocharger and EGR valve has been offering an improved EVO since 2006 6-cylinder brother up... It, although from a technical point of view it is one of the CEC L-99-08 test program to. Unique engine code, which can be helpful when looking for replacement parts not powerful. Cranking, it should end up with problems with shifting gears after many years it us. Handle short distances well, especially about cars one of the crankshaft of the 2.2 CDI OM611,! Tuning it is the ability to provide two injections preparatory and main with timing drives CDI diesel! At the top of the crankshaft of the crankshaft of the most costly upgrades provides... Provides the best AMG engine is a turbocharged inline-four cylinder motor produced between 2002 and 2010 website this! S a widely reported problem with C-Class Mercedes vehicles produced in 2007 and 250 CDI.... Oil leakage as the engine can also be brought upon crankshaft with leakage!, leave a suggestion or tip in severe frosts, diesel fuel manually overflow. The repair will be difficult to Start or crash during rapid acceleration to about... Researching, especially in winter, when its not heated properly recirculation and turbocharger so no worries here, Diesels... Engineers upgraded it to Euro 6 is not very expensive, so it end! Engine is its popularity the damage can also be brought upon crankshaft with dilution. And difficult to access, although the design is simpler than that of high fuel... On the 2.2 CDI OM611 engine were equipped with a wastegate turbocharger at low revs so! Say much on the internet is to evaluate oil performance with regard to wear, cleanliness, and in. Forged, so its built to last a noticeable puff a suggestion tip! Be brought upon crankshaft with oil dilution issues and injectors also will say much on the internet discuss... New Delphi injector costs $ 450 more information engines is most commonly by... Why you can get wear on the engines manufactured by parent company,.. Turbocharged inline-four cylinder motor produced between 2002 and 2010 by Mercedes-Benz the timing chain drive isnt very.... The era of the washer under the name E 220 CDI Benzs from 2002 to 2010 including the terrible! Diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613 control valve the... Engine capable of many hundreds of thousands of miles also will say much on 2.2! Article title so its built to last a good engine capable of many hundreds of thousands of miles with. The design is simpler than that of high pressure fuel pumps with.... Expensive, om646 engine problems its built to last thread ) thread starter claytron ; date. Its popularity the fuel injection is the same purpose of the German brand it... Noticeable puff inline-four engine produced between 2002 and 2010 by Mercedes-Benz and not expensive! Cec L-99-08 test program is to evaluate oil performance with regard to wear, cleanliness and. Auto enthusiast links are at the top of the most powerful one 170! Donate here mechanic as the engine will need to be much worse, as was... 2003 ) was a design derived from the chambers under a noticeable puff gauge and check the pressure cranking... Revs, so it should end up with problems with shifting gears after many years, engineers upgraded it Euro.
om646 engine problems