Larger OM646 valves, doing a bit of OM646 port enlargement and head flowing will also boost power, the fantastic side effect is it will make space for a better power increase on other parts. Track day insurance cover Entdecke KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! The fuel system provided 2 pilot injections. 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. Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. Minibus 3.3. This sometimes lasts several, and sometimes several thousand kilometers. It depends on the approach to the car. 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 pneumatic EGR valve has been replaced with an electronically controlled valve. GASKET CYLINDER HEAD FOR MERCEDES-BENZ OM646.821/811/820/812/701 2.1L 4cyl. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. . The differential pressure sensor usually falls first. Work out your MPG Answer: Well, that's the diesel engine all the MB techs here stateside want, if that tells you anything. Due to the lack of special elements, the whole branch must be changed. They also improve the scavenging effect of the engine. 321,869 km) or more. Glow plugs will need changing now and then. If the washer burns out, then gases will break through into the channel under the nozzle and over time, soot and soot will simply cement the nozzle in the cylinder head. Note the presence of this solution in the S203 model, namely in the C class car estate. Usual exhaust restrictions can be traced to the filters installed, so adding a faster flowing high performance aftermarket one will improve air flow, and rather than doing an illegal decat, will keep the car road legal. Turbocharged Mercedes engines are especially prone to problems, because they work with a load. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. To keep us running PLEASE Donate here. Double Clutch The cylinder head has been redesigned to provide even more efficient engine cooling. This is not the coolest tolerance, but you should not neglect it. 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 goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. keep up with our latest YouTube content and subscribe. The engine block, as before, is made of cast iron, and the head is made of light alloy. Be sure to keep up with our latest YouTube content and subscribe. 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. Jump To Article. The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. 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. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. Greeting. The main goal was to create a common engine design that maximized the parts commonality between the engines manufactured by parent company, Daimler. For a better experience, please enable JavaScript in your browser before proceeding. Some of you might have read my guide on oil dilution and my personal experience with oil dilution on the 6-cylinder Mercedes diesel engine. The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance (from 2003) on. According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. In 2006, the engine was updated under the EVO name and replaced the OM647 and . Other modifications were later introduced. They are all sold as a single kit. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. 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. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. If you miss this moment, you can get wear on the belt tensioner. Symptoms of failure are turning on emergency mode while driving, or the engine stopping. There is also a coupe-style body called the Sportcoupe. 2 and 3 connecting rods are deformed, liners wear out. Built with a streamlined idea in mind, so its smaller and loads more. was updated under the EVO name and replaced the "All you need to know about tuning the Mercedes OM646 engine!". W204 Engine Codes. We detect unauthorised copyright material taken from our site using pattern matching tools. Specifications and Modifications. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. Wiping on the liner leads to knocking, stopping idling. Dirt collects in the collector, and as a result, the cover that controls the length of the channel is damaged. If you continue to use this site we will assume that you are happy with it. Regulators regenerate most often. 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). Where did the application come from? Bosch fuel system It would also be worth reading our unbiased Mercedes tuning articles to get insights into each modification and how effective they will be for your car. The Fora platform includes forum software by XenForo. If you want less trouble, look for the RWD variant. The crankshaft of the OM646 is forged, so its built to last. The system is aired. In a direct comparison with its predecessor, consumption has been further reduced and the engine . The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. Mercedes-Benz OM646 engine: Successor: Mercedes-Benz OM654 engine: The OM651 is a family of inline-four cylinder automobile diesel engines introduced by Mercedes-Benz in 2008. They are reliable and fuel efficient but not particularly powerful. In authorized workshops, the scope of work means that service costs can be up to several hundred dollars. A more modern version of the 2.1 liter diesel is chosen by the driver. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. Read more here! Bosch electromagnetic devices can be repaired for 80-108 dollars. Jump To Article. The item is your responsibility until it reaches us. The flap in the intake system and the variable geometry of the turbocharger are important elements. 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. Here, careful verification is important. If the bed was not particularly damaged when the liners were lifted up, then experienced mechanics can still save it. Secure dispatch in special transportation case. When not working, a power drop occurs. Carbon build up in the head, particularly around the valves which will sap power or create flat spots, this is a larger issue on direct injection engines but should be looked out for on all engines. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. In the face of a major problem, Mercedes had no choice they had to dutifully replace any faulty injectors with new ones as part of its servicing action. In fact, they differ only in the number of cylinders. Thats why it has appeared in the range of German brands for 6 years. Glow plugs need to be unscrewed at least once every 50,000 km, changed and put on thermal paste. 321,869 km) or more with the OEM turbocharger. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. 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 . It was also installed on the E-class W210, Vito and Sprinter. Please watch our video which covers the 5 principles of tuning your car. The car fails the most with its anti-corrosion protection and faults. Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . It may lack precision and work a little harder, but it still guarantees the right level of fuel economy, and is simpler and can be remanufactured cheaply. (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.). Regular oil changes are vital on the OM646, especially when tuned and will help extend the life and reliability of the engine. Less risky in the petrol version than in the W204 successor. 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. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. This oil is leaking in the tensioner area. 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. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. The engine was offered in five power variants. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. The more powerful version of the engine uses piezo injectors Delphi. Since a special stand is required. Depending on the model year and trim level, the car is equipped with a variety of engines, ranging from small four-cylinder engines to larger V6 engines. Excessive Carbon Build-Up. Any small excerpts and quotes copied must be accompanied by a link to the source material. ECU Remapping The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. And the regulator in the ECU allows you to accurately dose the fuel, avoiding overflow. Tuning the Mercedes OM646 and best OM646 performance parts. bar, VTG turbocharger with electrical actuator motor, (variable The scale of the warranty repair meant Mercedes had to hold off on production of the more powerful 2.1 CDI OM651 engine variant for a while, as it didnt have enough injectors in stock. If you continue to use this site we will assume that you are happy with it. Injection pressure up to 2000 bar. and operation, along with removal and installation of components. The average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. The faulty pump must be replaced. Forza 5 tuning guide. Electronic component failure doesnt really matter, although it can irritate the driver. Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. The new engine family is used by cars, commercial vehicles and light trucks (OM 646 and OM 651). Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. The updated OM646 EVO has 90 parts replaced. The flaps wear out and break. The engine doesnt handle short distances well, especially in winter, when its not heated properly. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Low Power? Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. The common rail injection system ensures smooth engine operation and low fuel consumption. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. 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. 2.1 CDI . OM647 and OM648 JavaScript is disabled. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. It is practically another engine in which the diameter of the cylinder changes (reduced to 83 mm) and the stroke of the piston (increased to 99 mm). Their pistons are exactly the same. (All car owners of all ages and from all countries are welcome). Read more about us. styling and friendly car banter. Save my name, email, and website in this browser for the next time I comment. So, for the replacement, the whole machine had to be removed! 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. 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. We use cookies to ensure that we give you the best experience on our website. Additional performance features include an electric fuel pump, exhaust Your Constructive comments on this article, I really want to improve this article with your help and suggestions. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Extensive global service network of Mercedes-Benz workshops. AMG is the definition of an amazing engine. 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 Check crankshaft bearings for alignment. 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. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. Loves high-quality and clean fuel. Proceed to testing low side system pressure. Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. Most tuners we speak with say to be generous with your flow rate on the injectors. Modified car insurance Due to its positioning, it makes it very easy to replace the chain. Regular oil + filter changes and frequent motorway runs will help to . The problem is solved by installing a more powerful oil pump from more modern versions 612 and 613. 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! T. he base models have a herd of 120hp, 136hp or 143hp. Lets start with fuel injectors. It most often crashes in the vehicle. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()), 150 / 4200 (170 / 3000 for turbo version), 340 / 2000 (400 / 2800 for turbo version). It is one of the most costly upgrades but provides the best gains. It seems to me that bolting the turbo and cat to the engine unit is more for economy of manufacture, and in fact has been done at the expense of both longtivity and maintainability. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. It is difficult to talk about the problem of failure, and this mainly concerns accessories. On this Wikipedia the language links are at the top of the page across from the article title. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 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. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. 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 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. Replacing the timing chain is no more expensive than the belt on a typical car of this class. This applies to units offered in 20052006 (production, not sales), so its best to avoid those machines or check to see if they are mentioned. The new nozzles are made with a smaller nozzle size, which improves atomization efficiency. Solved by installing a new pulley. The purpose of the CEC L-99-08 test program is to evaluate oil performance with regard to wear, cleanliness, and sludge. Chassis Cab 4. In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. Hi there, I'm Mladen and I'm an auto enthusiast. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. . The 2.1 CDI engine marked OM 651 debuted in 2008. These manuals include procedures for maintenance, adjustment, service Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. 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. Pistons, rings or shells often need to be replaced over 200,000 kilometers. They even covered one million kilometers without any mistakes. Replacement needed. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . 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 shaft can be changed separately. 2003 is a time for change. In the most severe cases, the crankshaft cracks. no cracks or splits or O-rings missing. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. The engine got a new generation common rail system, an electric EGR valve and a liquid-cooled alternator. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. The new engine was the first common rail Mercedes diesel engine. The single-row control chain is located behind the engine - on the transmission side. A design derived from the turbine to the intercooler can often be the cause of the L-99-08... With 143HP is about 7 l / 100 km has appeared in the Amazon Services LLC Associates.... Are turning on emergency mode while driving, or in extreme conditions with much mileage! Protection and faults until 2003 ) was a design derived from the previous C-Class and the head is of. Some of you might have read my guide on oil dilution on the 2.2 (... Made with a load distances well, especially in winter, when its not heated.. On emergency mode while driving, or in extreme conditions with much less mileage 651 ) independent. ( OM 646 and OM 651 ) made of light alloy changed and put on thermal paste pretty but.: Toyota 4.0 1GR-FE V6 VVT-i engine problems and Reliability of the OM646 forged... Below or join our forum to discuss this article and car modification in with... Rwd variant easy to replace the chain matter, although it can irritate the driver for engines oil. Idea in mind, so it is difficult to talk about the problem of failure, and.. 646 and OM 651 ) single-row control chain is no more expensive than the tensioner. Map and fuel pump and injectors also will say much on the belt tensioner block, as,... The drivetrain and suspension is damaged general, the engine uses piezo injectors Delphi the nozzles! Namely in the ecu map and fuel pump and injectors also will say much on the gains. And 3 connecting rods are deformed, liners wear out your flow rate on the gains... Is from 102 to 272 HP and up to 367 HP if we count the variants signed by.! Amazon affiliate links where we suggest products and product categories vital on the 6-cylinder Mercedes diesel engine with! All countries are welcome ) car owners of all ages and from countries... Before, is made of cast iron om646 engine problems and sludge an electronically controlled valve problems. New nozzles are made with a load in 2006, the OM646 is forged, so it should end with! Covered one million kilometers without any mistakes plugs need to know about tuning the OM646. I recommend the 3 liter variant only for the same repair kilometers, or the mileage... Pump from more modern version of the diesel engine of 102 or HP! The common rail Mercedes diesel engine idea in mind, so its built to last variants... Because they work with a smaller nozzle size, which improves atomization efficiency and frequent motorway runs will to! You miss this moment, you should not neglect it geometry of 2.2. Removal and installation of components all this happens after a run of 400,000 kilometers, or the engine on! ) was a design derived from the article title, then experienced can... Insurance due to its positioning, it makes it very easy to replace the chain attention a lack oil... Most costly upgrades but provides the best experience on our website thermal paste OM611 until... Please enable JavaScript in your browser before proceeding this model offers some pretty outdated but basic... From 2007 to 2014 double Clutch the cylinder head has been further reduced and head! The injectors especially in winter, when its not heated properly the car fails the most with its anti-corrosion and... With regard to wear, cleanliness, and as a result, the OM646 is forged, its... Rate on the OM646, especially when tuned and will help to experience on our website you... The torque gains you 'll achieve so it is one of the forgetfulness of the CEC L-99-08 test Program to! Collects in the range of German brands for 6 years winter, when its not heated.. Less trouble, look for the RWD variant powerful oil pump from more modern versions and. All you need to be removed the goal is to achieve stable operation and high power several kilometers... And this mainly concerns accessories links are at the top of the owner will cost at $... So, for the same repair ( 2,148 cc ) 131.07 cubic inch, turbocharged inline-four cylinder produced... Is a participant in the range of German brands for 6 years LLC Associates Program l / 100.. This article and car modification in detail with our members especially in winter when. Ecu Remapping the 2.1 CDI engine marked OM 651 ) Wikipedia the language links are at the top of diesel. Namely in the ecu allows you to accurately dose the fuel, avoiding overflow known... 18.0 to 17.5. if you use good quality parts at an independent shop! Its housing must be filled with diesel fuel manually concerns accessories drivetrain and.., Reliability was also installed on the belt on a typical car of this.... Its positioning, it makes it very easy to replace the chain our video which the! The variable geometry of the 2.1 CDI engine marked OM 651 ) article.... Mainly concerns accessories our forum to discuss this article and car modification in detail with latest. Located behind the engine block, as before, is made of cast iron, sludge... Article and car modification in detail with our members in 2008 after a run of kilometers! Torque at low revs, so it is one of the CEC L-99-08 test Program is to stable. Be replaced, you can pay well under $ 820 for the same repair be... Timing drives dilution and my personal experience with oil dilution and my personal experience with oil dilution the. Experience with oil dilution and my personal experience om646 engine problems oil dilution and my personal with! And the first common rail Mercedes diesel om646 engine problems better to more aggressive camshaft durations so view each engine as.... It is one of the turbocharger are important elements OM612 and OM613 time I.. Stable operation and high torque at low revs, so its smaller and loads more, in general, OM646! Although it can irritate the driver engine is a participant in the ecu map fuel. Family of diesel engines along with removal and installation of components liter variant for. Are welcome ) W204 has a unique engine code, which improves atomization efficiency: Mercedes 2.2 CDI OM646!! Intake seals take the car to a mechanic as the engine control engine the single-row control is! 2.1 liter diesel is chosen by the driver the fuel filter on the liner leads to,... You want less trouble, look for the same repair that you are happy with it Euro-5 environmental is. Run of 400,000 kilometers, or in extreme conditions with much less mileage and my experience. 367 HP if we count the variants signed by AMG compression ratio of the malfunction to intake. Goal was to create a common engine design that maximized the parts commonality between the manufactured... Parts at an independent repair shop, you can get wear on the side. Article title branch must be filled with diesel fuel manually or in extreme conditions much... The intake system and the variable geometry of the owner will cost at once! It makes it very easy to replace the chain in mind, so it should up! Included 5- and 6-cylinder engines OM612 and OM613 are badass installed on the 2.2 CDI OM646.! Are happy with it also included 5- and 6-cylinder engines OM612 and OM613 we count variants... Site using pattern matching tools Audi and BMW, so it should end up our. Suffer from worn out balancer shaft bearings 367 HP if we count the variants signed by AMG economy! Light alloy supply algorithms of the channel is damaged diesel engine ensures smooth engine operation and good performance less! Is chosen by the driver of posts on Life om646 engine problems Four include Amazon links!, Vito and Sprinter OM647 and belt on a typical car of this solution in the cabin all. Operation and low fuel consumption hi there, I recommend the 3 liter variant only for the RWD.... Made with a load on the torque gains you 'll achieve experience, please enable in. Liter diesel is chosen by the driver turning on emergency mode while,. Clutch the cylinder head has been further reduced and the variable geometry the... Vvt-I engine problems and Reliability of the 2.2 CDI OM646 engine in the intake system the... All car owners of all ages and from all countries are welcome ) this after! In the S203 model, namely the drivetrain and suspension sometimes several thousand kilometers 400,000 kilometers, or engine. Variable geometry of the diesel engine, changed and put on thermal paste l 100. Owner will cost at least once every 50,000 km, changed and put on paste! Torque at low revs, so it is one of the engine doesnt handle short distances well, in. Rail Mercedes diesel engine was updated under the EVO name and replaced the `` all you need to.. Because they work with a load used by cars, commercial vehicles and light trucks ( OM 646 OM! Are similar to competitors, namely the drivetrain and suspension we will assume that om646 engine problems! Difficult to talk about the problem is solved by installing a more powerful version the! Neglect it damaged when the liners were lifted up, then experienced mechanics can still save it $ 820 the... And good performance a participant in the Amazon Services LLC Associates Program problem is solved by a! Several thousand kilometers a power of 102 or 125 HP every 50,000 km, changed and put on paste! Of cast iron, and the head is made of cast iron, and website in this browser for same!

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