Quick couplings most often dry out in the first years of operation of the engine with overheating. Tuning . #10. The repair costs exceed half a billion euros. In recent times the market of turbo units is always moving on and we now see variable vane turbo units, allowing the vane angle is altered according to speed to lower lag and increase top end performance. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. Each rear wheel is guided by four elements. Therefore, Common Rail equipment becomes a problem. The culprit is the coolant pump. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. This can lead to erratic engine behaviour. To keep us running PLEASE Donate here. Oil dilution on these engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations. 4- . The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance (from 2003) on. In fact, they differ only in the number of cylinders. Their pistons are exactly the same. Doing both things is a sure way to experience oil dilution. engines. Gasket Design Multilayer Steel (MLS). Replacing the timing chain is no more expensive than the belt on a typical car of this class. The system is aired. The compression ratio is reduced to 16.2: 1. 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. The car fails the most with its anti-corrosion protection and faults. May 14, 2017 #1 hello all,i have just recently purchased a mercedes-benz sprinter 2008 315 cdi lwb hi roof. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. A number of solutions included in the TwinPulse name are used. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. Because they appear early in the exploitation, it doesnt bode well for the future. Save my name, email, and website in this browser for the next time I comment. Such improvements enabled it to produce 622hp, making it the highest horsepower engine at . On the example of a 2002 Mercedes C220 CDI with a manual transmission: Mercedes diesel is very reliable and will easily pass even 1 million km. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. Manufacturer Part Number 61-37200-10. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. After purchase, it is worth taking care of this area. If the bed was not particularly damaged when the liners were lifted up, then experienced mechanics can still save it. Nozzles break down about 50.000 km. Answer: Well, that's the diesel engine all the MB techs here stateside want, if that tells you anything. Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. At the turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent to service every week! Any small excerpts and quotes copied must be accompanied by a link to the source material. Remapping Diesels Here is the complete list based on the engine variant (source; Wikipedia): If youre in a rush, heres a quick summary of all the common OM646 diesel engine problems: For those of you that want to know more details, make sure you continue reading as we dig deeper into these concerns and more. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. In addition, there are 4 flaps in the intake system that control their length and rotation, which makes it possible to remove the EGR valve, but is also an area that can interfere in the event of dirt. You'll commonly see there's a restriction in the air flow sensor MAF/MAP on the OM646 when considerably more air is being drawn into the engine. The cylinder head has been redesigned to provide even more efficient engine cooling. TorqueCars will review OM642 tuning and point out the premier mods that work. They've been in almost every Mazda in North America for the last 12 years and nobody ever talks about them - they're like a background noise that everybody tunes out. The 2.1 CDI engine marked OM 651 debuted in 2008. Induction Kits In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. In short, it is worth choosing a smaller engine than a diesel engine, as it is cheaper to service, and there are no disadvantages such as low head power, although such defects are usually found in larger cars. Modification: OM611 DE 22 LA red. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. The compression ratio is reduced to 16.2: 1. Symptoms: too slow engine warm-up. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. Extensive global service network of Mercedes-Benz workshops. Removing the injector is a difficult task. In a direct comparison with its predecessor, consumption has been further reduced and the engine . In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. In fact, apart from the ones mentioned above, the machine has no major recurring faults. The best AMG engine is a 6.2-Liter V8, fitted in the 63. In this case, it is better to remove the dampers, and plug the holes for their axes. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. We love hearing about our website visitors projects, especially the mods done and which work best for you on your car. We think this one is common sense, but you'll need to match your fuel injector to the type of fuel your car uses as well. 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. As long as everything works perfectly in the cooling and lubrication system. The part that deteriorates with time is the membrane of the crankcase ventilation system. Jan 27, 2017. Higher pistons and short connecting rods were used. 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. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. 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 2006, Mercedes-Benz upgraded the OM646 diesel. The crankshaft of the OM646 is forged, so its built to last. 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. Detail: Drainage valve seal - keeper with sealing ring Fig. Classic cars with converters have 5 or 7 gears. On this Wikipedia the language links are at the top of the page across from the article title. The chain itself is not very expensive, so no worries here! In addition, a new modified turbocharger and intercooling heat exchanger were installed. New replacement costs at least $ 405. turbo to intercooler. 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. Then you will pay about $500 for parts alone. The shaft can be changed separately. Replacement needed. Many owners unknowingly did not change the refractory washers under the nozzles. Life On Four is more than just another automotive media outlet. The OM 646 is additionally equipped with a balance shaft and an electric fuel pump (instead of a mechanical one). Sports exhausts equal out the flow of gases through the engine. Work out your MPG Specifications and Modifications. This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. If you want less trouble, look for the RWD variant. Double Clutch Few problems should happen as long as they are regularly serviced and maintained. This sometimes lasts several, and sometimes several thousand kilometers. To improve engine starting, ceramic glow plugs began to be used. The updated OM646 EVO has 90 parts replaced. General description. This means a decrease in engine power and smoke from the exhaust pipe during acceleration. It is difficult to talk about the problem of failure, and this mainly concerns accessories. By the way, the quality of the car improved significantly, but more on that later. Hi there, I am Mladen and I am an auto enthusiast. Also, the cylinder head camshaft drive often wears out. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. . The engine was offered in five power variants. I usually find intake manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good intake manifold. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. Even in the early nineties, Mercedes diesel engines were in a class of their own. Thats why it has appeared in the range of German brands for 6 years. "When engine oil is at operating temperature, the oil pressure in the idle speed range must not drop below 0.3 bar. And as if that werent enough, the timing chain drive isnt very durable. 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. Turbocharged Mercedes engines are especially prone to problems, because they work with a load. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Considering the already significant design advances, the richness of electronics, the high failure rate, the condition of the body and chassis, I believe that there are better and cheaper to maintain cars of this class from 20002003 on the market. 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 . Advantages Costs. The engine was equipped with a Common Rail 2 fuel system. The faulty pump must be replaced. These Mercedes Engines Won't Last 100,000 Miles!Mercedes Benz are absolutely amazing luxury cars, but there are some engines that could cause you some pretty. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, 2.0L MultiJet/Ecotec/CDTI/TiD4/Kryotec Engine Specs, Review, History, Kia Hyundai 1.4 MPi (G4FA) Gamma Engine Specs, Review, History. Most tuners we speak with say to be generous with your flow rate on the injectors. If you continue to use this site we will assume that you are happy with it. 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. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. Due to its positioning, it makes it very easy to replace the chain. Equipment failure is caused by mileage and wear. Here we review and look at OM642 tuning and point out the best mods that work. Since a special stand is required. Other variants are ok. Thats why I compiled the list above in this way. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. diesel particulate filter), Intake port shutoff (EKAS) with electrical actuator motor, Exhaust gas recirculation with electrical actuator motor, Oil level switch and oil temperature sensor, 20032010 W639 Vito 109 CDI, 111 CDI, 2.0 CDI, 20102013 Vito (Chinese market; known as OM646 980). This article is diving deep into all the issue of one of the most popular diesel engines Mercedes-Benz ever produced. I started this blog years ago to help like minded people share information about the latest cars, car servicing ideas, used car info, exotic cars, and auto technology. This one can also stretch pretty fast. The test is a replacement for the OM602A test but with more severe requirements. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. The engine block, as before, is made of . Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. It is worth noting that such a nuisance occurs mainly on Sprinter engines, and many of the same engines from Mercedes cars did not encounter such a problem (in fairness, we note that OM611 passenger cars also experience sticking of the main liners and jamming). In terms of issues, there were none that would occur frequently. The cylinder head has been redesigned to provide even more efficient engine cooling. Other modifications were later introduced. 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. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. Save my name, email, and website in this browser for the next time I comment. Read more about us. no cracks or splits or O-rings missing. 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. Despite the fact that the engine from the Mercedes 2.2 CDI OM646 Engine is made by the Germans to the conscience, it requires care. Uncontrolled leakage of antifreeze can cause the engine to overheat. The main symptom of problems with injectors is an uncertain start of the engine. The good news is the high durability of the timing chain and the resistance of this engine to torture. The 6-speed manual gearbox is not a very successful design. Additional performance features include an electric fuel pump, exhaust The Mercedes-Benz OM651 was a four-cylinder turbo-diesel engine that was first introduced in October 2008 and replaced the four-cylinder OM646 and six-cylinder OM642 engines. 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. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. OM602 engine 2.3. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. Please watch this video and subscribe to my YouTube channel. Issues by Complectations or Trim Levels 3.1. Issues by Engine Type or Engine Name 2.1. Alternator pulley failure is accompanied by noise. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. Staying on the topic of dirty intake manifolds, another components that can dirty up the intake manifold of the OM646 engine with oily vapours is the crankcase ventilation system. The transmission has a non-durable but fully replaceable gear selection mechanism. Longer valve durations can alter the torque band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. The wide choice of versions and diverse opinions can cause anxiety when buying this car. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. Best Mercedes AMG Engine: 6.2-Liter V8. Regular oil + filter changes and frequent motorway runs will help to . The turbine and floating flywheel rarely manage to cover 150000 km. Hi there, I'm Mladen and I'm an auto enthusiast. Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. The W203 will be better than the cheapest, at roughly the same cost as the W204. - Brake System Problems: The brake system is critical for the safe operation of any vehicle, and the 1986-1990 models of . It is one of the most costly upgrades but provides the best gains. 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). 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. Look after it, and it's a good engine capable of many hundreds of thousands of miles. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The 2.1 CDI engine marked OM 651 debuted in 2008. It features a reduced compression ratio of 17.5:1, a new turbocharger, Your Constructive comments on this article, I really want to improve this article with your help and suggestions. (OM611) Engine Specs, Problems, Reliability. Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). . According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. Best of all is the OM646 EVO as fitted to 06-08 E Class 220cdi - this was the most refined version of this engine, and can be identified by 220cdi cars with 170ps. Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . Because I love writing and researching, especially about cars. 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! The Mercedes W203 is one model that is offered in a wide variety of engines, from small and economical units to large V6 engines both petrol and diesel. So, after the Fiats 1.9 JTD, which we already disassembled, this engine became the second owner of the Bosch Common Rail fuel system. . Definitely get the auto box, subject to Mr E's Valeo / glycol warning. 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. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. 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 . Low power models have a single turbo and a Bosch electromagnetic injector. Definition. Forza 5 tuning guide. Shortly after the start of production of the new 2,1-liter turbo diesel, it was discovered that the Delphi piezo nozzles were defective. 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. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 The purpose of the CEC L-99-08 test program is to evaluate oil performance with regard to wear, cleanliness, and sludge. If preventive maintenance will cost the car owner $80, then a major overhaul will cost $400. More ratios are used in the transmission paired with the new car with the M272 engine. NA (naturally aspirated) engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your OM646. 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 We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide 3. was updated under the EVO name and replaced the 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. 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. and operation, along with removal and installation of components. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). This entry was Electric connections in the engine often have trouble working with the crankshaft sensors, which can lead the car simply shut down and stop working. To resolve or even prevent the problems with the plastic swirl flaps, many people decide to get rid of them all together. Check crankshaft bearings for alignment. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. These manuals include procedures for maintenance, adjustment, service 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 . 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. Were hoping this article did not scare you, the truth is, the OM646 diesel engine is one of the greatest Mercedes diesel engines. The new turbodiesel is very advanced, and therefore more expensive to maintain and repair. 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. The engine starts to sneeze, stalls. 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. Weak spots, Issues & problem areas on the OM646. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM646 tuning guides which get regular updates and revisions. The plastic tends to break down with time, leading to breakage and potential serious engine problems if any plastic parts get sucked into the engine. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material.