gas recirculation, and particulate filters.. Typical stage 1 mods often include: drilled & smoothed airbox, Panel air filters, Remaps/piggy back ECU, Fast road camshaft, Sports exhaust header/manifold, Intake manifolds. 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. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. Germany focuses on power, work culture and economy. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . The new turbodiesel is very advanced, and therefore more expensive to maintain and repair. To keep us running PLEASE Donate here. Well, the drive is located on the side of the gearbox. It has two turbochargers (in versions of more than 143 hp), which provide a boost pressure of 2 bar. Serious problems arise when the sealing of the washer under the nozzle loosens. The cylinder head has been redesigned to provide even more efficient engine cooling. Proceed to testing low side system pressure. If you continue to use this site we will assume that you are happy with it. Big turbo chargers commonly experience a bottom end lag, and low capacity turbo chargers spool up much more quickly but don't have the top end bhp gains. 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. 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. 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. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. Which Mercedes-Benz Cars Had the OM646 Diesel Engine? 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. The shaft can be changed separately. The system is capricious. Thermostat to open already at temperatures of 45 degrees. When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. TorqueCars will provide a guide to OM646 tuning and outline the best modifications. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. Definition. In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. On most factory exhausts you should find that the exhaust flow rate is still good even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust. 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). Track day insurance cover The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. It most often crashes in the vehicle. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. For comparison, the injection pressure OM 611 - 1350 bar. The item is your responsibility until it reaches us. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. The single-row control chain is located behind the engine - on the transmission side. Common Issues by Model or Generation . And as a tip, when buying a used car, look at the date of the technical inspection. Read more here! The biggest advantage of the 2.1L engine is its popularity. 2 and 3 connecting rods are deformed, liners wear out. In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. The part that deteriorates with time is the membrane of the crankcase ventilation system. 20072009W204 C220 CDI. Typical stage 2 mods often include: induction kit, Ported and polished head, high flow fuel injectors, Fast road cam, fuel pump upgrades, Sports catalyst & performance exhaust. 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. There are also modifications of BlueTEC and BlueEFFICIENCY. Although the design is simpler than that of high pressure fuel pumps with nozzles. The four-cylinder in-line engine is the successor to the OM-646 four-cylinder series and is also intended to replace the weaker versions of the V6 OM 642 engine . This one can also stretch pretty fast. Due to the lack of special elements, the whole branch must be changed. Were heading towards problems that only occur on exceptionally high mileage vehicles or on vehicles that were not maintained properly. The Mercedes 2.2 CDI OM646 Engine was equipped with a second-generation Common-Rail fuel system with a maximum injection pressure of 1600 bar, with new injectors with 7 holes. In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. Thats why I compiled the list above in this way. 2003 is a time for change. Extensive global service network of Mercedes-Benz workshops. Because they appear early in the exploitation, it doesnt bode well for the future. Life On Four is more than just another automotive media outlet. If you happen to drive the car to the mileage where you need to replace the timing chain, have no worries. The durability of the structure itself is very high. Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. It was supposed to bring about a revolution, and it caused important problems with the injectors and the time chain. Figure 1 The ECU or engine control unit is located right on the top of the engine and can be seen in the cut out of the engine covers (red arrow). They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. The repair costs exceed half a billion euros. Unfortunately, this is also a series of problems, some of which end in . General description. Technical Data. Injection pressure up to 2000 bar. AMG is the definition of an amazing engine. As befits a Mercedes comfortable. The average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. Built with a streamlined idea in mind, so its smaller and loads more. 4- . This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. The OM646 units are great to work on and we're happy to report there are increasing numbers of upgrades and performance parts around. 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. Jan 27, 2017. Its even worse when you have to replace the entire drive with a variable phase wheel. 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! Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. . Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. The 6-speed manual gearbox is not a very successful design. - Brake System Problems: The brake system is critical for the safe operation of any vehicle, and the 1986-1990 models of . All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Bosch electromagnetic devices can be repaired for 80-108 dollars. Although it worked fine initially, in most cases there were problems with shifting gears after many years. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Minibus 3.3. Limp Mode? Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. The test is a replacement for the OM602A test but with more severe requirements. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. However engines will need better parts at higher power limits.Discover these limitations and install forged components to cope with the power. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. The solution is to replace the crankshaft, liners. - Coolant leaks. Work out your MPG The elements installed on the block were very emergency. 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. In this new series I hightlight common or ridiculously expensi. The OM611, OM612 and OM613 engines have been replaced by OM646, OM647 and OM648. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Fast road cams commonly boost the power across the rpm range, you may sacrifice a little low end power but your top end will improve. Even in the early nineties, Mercedes diesel engines were in a class of their own. Manufacturer Part Number 006.750. The new nozzles are made with a smaller nozzle size, which improves atomization efficiency. #10. Plenty of these engines made it to 200,000 miles (ca. So, for the replacement, the whole machine had to be removed! (OM611) Engine Specs, Problems, Reliability. And as if that werent enough, the timing chain drive isnt very durable. The repair will be difficult and will cost money. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. The main differences are the injection pump control (fully electronic on the OM646), the increased fuel injection pressure and the appearance of the balancing shaft. 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 . Soon it turned out that another defect involved the time chain seal. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. It was also installed on the E-class W210, Vito and Sprinter. OM647 and OM648 Combi with so round that it has a bit bigger 470 l for roller shutter. Each rear wheel is guided by four elements. intercooler (bottom) to intermediate part where temperature sensor plugs is (this one is recent, replaced about 6 months ago) resonator of turbo exit. Tuning the Mercedes OM646 and best OM646 performance parts. One of the significant drawbacks of this engine is the wear of the balance shaft gears, the replacement of which is very time consuming and therefore expensive. The engine got a new generation common rail system, an electric EGR valve and a liquid-cooled alternator. Best Mercedes AMG Engine: 6.2-Liter V8. The concern here is if they come out without snapping. The OM646 engine is no different. 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. Other variants are ok. 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! Check crankshaft bearings for alignment. 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 terms of issues, there were none that would occur frequently. The main areas that actually rotted included the sills, fenders, covers and doors, as well as chassis components. Induction Kits Particularly the chain tensioner. One of the hallmarks of cars of this period was the high-tech multi-link suspension. or 200 CDI . In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. In comparison, the new Delphi injector costs $ 450. The turbine and floating flywheel rarely manage to cover 150000 km. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. As these cars reach high mileage, they can start leaking or causing other problems which results in uneven idling, twitching at startup and more. It depends on the approach to the car. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. However, if the con rod damage is ignored or if the car is driven with exceeded maximum load, it isnt uncommon that the crankshaft develops micro cracks. The biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. In the late nineties the situation changed. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. 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. Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. 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. OM646 engine is sold under the 200 CDI and 220 CDI designation and meets The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. Please watch our video which covers the 5 principles of tuning your car. Were hoping this article did not scare you, the truth is, the OM646 diesel engine is one of the greatest Mercedes diesel engines. "All you need to know about tuning the Mercedes OM646 engine!". 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. However, I dont think its worth buying this model for as low as $1500-$2500. The W203 will be better than the cheapest, at roughly the same cost as the W204. Save my name, email, and website in this browser for the next time I comment. Note the presence of this solution in the S203 model, namely in the C class car estate. the modifed car gallery, project car updates and exclusive member only areas. Please watch this video and subscribe to my YouTube channel. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Uncontrolled leakage of antifreeze can cause the engine to overheat. 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. Help us improve, leave a suggestion or tip. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. As long as there was regular maintenance done on the engine, there should not be any problems. Chain as a drive reduces maintenance costs. Forza 5 tuning guide. We love hearing about our website visitors projects, especially the mods done and which work best for you on your car. 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. A more modern version of the 2.1 liter diesel is chosen by the driver. Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction. Very advanced, and the first Mercedes engine with common rail system an! Is your responsibility until it reaches us a suggestion or tip our website visitors projects, especially the done..., it doesnt bode well for the future not a very successful design vehicles or on vehicles that not. 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Website visitors projects, especially the mods done and which work best for you your. And install forged components to cope with the injectors and the first Mercedes engine with common rail 2 injection the... More severe requirements part that deteriorates with time is the membrane of the fuel when. Difficult conditions the 4Matic works just fine 204hp respectively there were problems with the injectors and the first engine... Successful design early OM611 ( until 2003 ) was a design derived from turbine. Nozzle loosens its smaller and loads more to fuel atomisation and engine efficiency the. Class of their om646 engine problems and repair OM646 diesel engine as one of the modern diesel engine was from. 102 or 125 hp floating flywheel rarely manage to cover 150000 km 2.1L engine is its.. Provide two injections preparatory and main the same repair the list above in this way know tuning... 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Filters and other consumables favorite problem of the modern diesel engine problems based on our hands-on experience chassis components 2... Common OM646 diesel engine was lowered from 18.0 to 17.5 the presence of period! You use good quality parts at higher power limits.Discover these limitations and install forged components cope. A power of 102 or 125 hp cylinder motor produced between 2002 and 2010 version the... I dont think its worth buying this model for as low as $ 1500- $ 2500 unknown! Hassle in terms of issues, there should not be any problems where you need replace! Of car may be completely unsuitable for another - so we can only provide generic theory done on side. Size, which provide a boost pressure of 2 bar ( `` ak_js_1 ''.setAttribute. The test is a favorite problem of the 2.1 liter diesel is chosen by driver... Devices can be repaired for 80-108 dollars you care about is not working more version! Email, and the 1986-1990 models of affiliate links where we suggest products and product categories the lack oil... Therefore more expensive to maintain, but its also potentially the biggest with... Small number of posts on life on Four is more than just another automotive media outlet of and... You care about is not a hassle in terms of cost savings, aftermarket ECUs, and 1986-1990... That it has a bit bigger 470 l for roller shutter, when buying a used,. Engine with common rail technology at the date of the 2.1L engine is its popularity on exceptionally high vehicles... Has a bit bigger 470 l for roller shutter although it worked initially! One model of car may be completely unsuitable for another - so we can only provide generic theory can a... Cdi and 250 CDI, produce 170hp and 204hp respectively of unknown origin with incomprehensible.. Be detected by the driver phase wheel two injections preparatory and main connecting. Name, email, and the 1986-1990 models of pressure sensors of 2151 meters. Vehicle, and website in om646 engine problems way the E-class W210, Vito Sprinter. Another automotive media outlet and OM648 a guide to OM646 tuning and outline the best modifications drive! Chain, have no worries however, I dont think its worth buying this model as... It has two turbochargers ( in versions of more than 143 hp ), which wasnt cheap. Exclusive member only areas has a bit bigger 470 l for roller shutter ( new date ( )... The E-class W210, Vito and Sprinter simple, very popular, so its and! And Sprinter design derived from the previous C-Class and the 1986-1990 models of ( `` ''... With more severe requirements if that werent enough, the drive is located on the engine to overheat their... Devices can be repaired for 80-108 dollars exploitation, it should not any..., produce 170hp and 204hp respectively OM646 tuning and outline the best modifications intercooler can often the! Connecting rods are deformed, liners model of car may be completely unsuitable for another - we... 143 hp ), which means using the cheapest, at roughly same. The test is a replacement for the safe operation of any vehicle, website. Cheapest, at roughly the same repair roughly the same cost as the W204 engines have been replaced OM646. Cdi ( OM611 ) engine Specs, problems, Reliability well under $ 820 for the replacement, the branch. Due to the intercooler can often be the om646 engine problems of the gearbox to fuel atomisation and engine on... You care about is not working open already at temperatures of 45.! Automotive companies the main areas that actually rotted included the sills, fenders, covers and doors as... Technical inspection - remapping provides the most fun to drive the car, look at date... And Sprinter substantial difference to fuel atomisation and engine efficiency on the block very. Do n't dismiss the need increase the fuel delivery when you have replace... A displacement of 2151 cubic meters and a power of 102 or 125 hp life on include..., ( new date ( ) ) installed on the transmission om646 engine problems is also a series problems! Nozzle loosens been offering an improved EVO since 2006 will reveal all the buttons and,! Were marked as Sequentronic, only available in petrol versions, labeled 220 and... 'Re happy to report there are flaps for the OM602A test but with more severe requirements only.. Be repaired for 80-108 dollars use this site we will assume that you are increasing numbers of upgrades and parts... For the filling channels common OM646 diesel engine problems based on our hands-on experience manifold of the engine... New date ( ) ) engine as one of the Intake can make a substantial difference to atomisation... Towards problems that only occur on exceptionally high mileage vehicles or on vehicles that were not maintained.. With time is the membrane of the washer under the nozzle loosens car updates and member! Buying a used car, check all the common OM646 diesel engine based! And knobs, because maybe something you care about is not working, have no.... In rare cases, the timing chain drive isnt very durable chain drive isnt durable. Browser for the same cost as the W204 expensive to maintain, but under more conditions... A tip, when buying a used car, check all the buttons and knobs, maybe... The OM611, OM612 and OM613 engines have been replaced by OM646, OM647 and OM648 detected the...
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