om646 engine problems

I especially recommend this option for the more powerful and larger versions of the engine. Classic cars with converters have 5 or 7 gears. 2.1 CDI . These manuals include procedures for maintenance, adjustment, service The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. The machine we will be discussing today has the designation OM651 and focuses on maximum modernity. Also, the cylinder head camshaft drive often wears out. Pistons, rings or shells often need to be replaced over 200,000 kilometers. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. In a direct comparison with its predecessor, consumption has been further reduced and the engine . It features a reduced compression ratio of 17.5:1, a new turbocharger, Every engine has Common Rail injection, and Mercedes isnt the best-performing company. Their strength, however, is simplicity and lack of effort. Low power models have a single turbo and a Bosch electromagnetic injector. Advantages Costs. Therefore, Common Rail equipment becomes a problem. The engine block, as before, is made of cast iron, and the head is made of light alloy. 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! OM642 oil pressure check. Manufacturer Part Number 006.750. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()), 150 / 4200 (170 / 3000 for turbo version), 340 / 2000 (400 / 2800 for turbo version). Because I love writing and researching, especially about cars. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. 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. 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. TorqueCars will review OM642 tuning and point out the premier mods that work. Hence the problems faced by other and subsequent owners. The OM646 engine features two camshafts, 16 valves and a two row duplex timing chain that is built to last. They should be changed every 60,000 km, along with the replacement of the injector mounting bolts. Modified car insurance That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. The single-row control chain is located behind the engine - on the transmission side. 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. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. We use cookies to ensure that we give you the best experience on our website. Tuning the Mercedes OM646 and best OM646 performance parts. Common Issues by Model or Generation . Higher pistons and shorter connecting rods were used. More ratios are used in the transmission paired with the new car with the M272 engine. Such an injection is capable of delivering 1600 bar. 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 . Panel van 3.2. 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. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. 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). Life On Four is more than just another automotive media outlet. Save my name, email, and website in this browser for the next time I comment. Advantages Availability. Rapid delivery as usually in stock. One of the most notable features of the Mercedes C200 is its engine. The more powerful version of the engine uses piezo injectors Delphi. The differential pressure sensor usually falls first. W639 Vito 111 CDI, 2.0 CDI, 111 CDI (2003 2010), Plastic swirl flaps in the intake manifold tend to break down with age, Blocked or damaged crankcase ventilation system, Oil leaks around the crankcase ventilation module, Leaky injector seals lead to CDI Black Death. Mercedes E-Class W211 - OM646.951 OM646.961 Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. The pneumatic EGR valve has been replaced with an electronically controlled valve. The problems get complicated after the appearance of the OM651 series of engines. OM646.981, OM646.982, OM646.983, OM646.984, OM646.985, OM646.986, MBMANUALS.COM Website Content Copyright Protected, Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals, 110 kW (150 PS; 148 hp) @ 3,800-4,200 rpm, Manuals may be used as reference for other vehicles with OM646 Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. 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 updated OM646 EVO has 90 parts replaced. 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. The flaps wear out and break. 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 engine has an injection system Common Rail Bosch with first generation magnetic nozzles, exhaust recirculation and turbocharger. The good news is the high durability of the timing chain and the resistance of this engine to torture. And while the parts themselves can be bought at auto stores for as little as $ 135, the repairs are quite expensive. Mercedes-Benz Sprinter (W906) repair manual. Not only does it look bad, it also bakes in the fuel injectors, making them almost impossible to take out when needed. The damage can also be brought upon crankshaft with oil dilution issues. Nozzles can be repaired. 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. 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. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. the modifed car gallery, project car updates and exclusive member only areas. In 2010, engineers upgraded it to Euro 6. Wiping on the liner leads to knocking, stopping idling. In fact, apart from the ones mentioned above, the machine has no major recurring faults. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. Mazda SKYACTIV 2.0L and 2.5L engines. Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. In authorized workshops, the scope of work means that service costs can be up to several hundred dollars. Well, the drive is located on the side of the gearbox. feature on twinchargers if you want to read more. The flap in the intake system and the variable geometry of the turbocharger are important elements. Thats why I compiled the list above in this way. Plenty of these engines made it to 200,000 miles (ca. If you continue to use this site we will assume that you are happy with it. Although it had some problems in its early stage, the engine was later perfected. According to behind-the-scenes information, 100,000 vehicles have been damaged. They even covered one million kilometers without any mistakes. and ceramic glow plugs for improved engine starts. In addition, during operations, especially in cities, the DPF itself often clogs up. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. 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. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. The problem with the Delphi piezoelectric injector turned out to be painful for the Germans. 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 2.2-liter in-line diesel engine Mercedes OM611 was produced from 1997 to 2006 and was installed both on passenger models, such as W202 or W210, and on commercial minibuses. 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. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). The EGR valve was replaced on OM646, a new DPF and catalyst were installed; Increased the size of the intercooler heat exchanger; Updated all pressure and temperature regulators. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. One of the hallmarks of cars of this period was the high-tech multi-link suspension. 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). Electronics has become a very troublesome area. 2 and 3 connecting rods are deformed, liners wear out. 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. In the used market, most Mercedes diesels have much higher mileage than the speedometer shows. The third diesel engine in the C-Class is a 3-liter engine with a V6 OM642 configuration, with far more power than the others. 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. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. Weak spots, Issues & problem areas on the OM646. Due to its positioning, it makes it very easy to replace the chain. Otherwise, the candles may harden and then they will have to be drilled out. This problem cannot be determined in garage conditions. 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. 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. AMG is the definition of an amazing engine. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. Hi there, I'm Mladen and I'm an auto enthusiast. Why word? Save my name, email, and website in this browser for the next time I comment. The 6-speed manual gearbox is not a very successful design. In our opinion, the best 4-cylinder Mercedes-Benz diesel engine is the OM646. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. As that happens, the blow-by from an engines crankcase is no longer being routed back to the combustion chamber of the engine, instead it stays trapped in the engine, dirtying up everything in its way, including the intake manifold. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. ! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. . Light and compact, yet almost completely trouble free with proper servicing. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. Low Power? 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 . The car fails the most with its anti-corrosion protection and faults. Detail: Drainage valve seal - keeper with sealing ring Fig. bar, VTG turbocharger with electrical actuator motor, (variable 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. Remapping Diesels 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. Forcing air into the OM646 engine is the main goal to any performance tuning project. The average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. Glow plugs need to be unscrewed at least once every 50,000 km, changed and put on thermal paste. Quick couplings most often dry out in the first years of operation of the engine with overheating. In fact, they differ only in the number of cylinders. Both the early Bosch and later Delphi fuel injectors are fault free and known to be very reliable. keep up with our latest YouTube content and subscribe. 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. 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. 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. It debuted shortly before the advent of this generation of C-Class. 321,869 km) or more. Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. Check crankshaft bearings for alignment. In 2006, the engine (All car owners of all ages and from all countries are welcome). Unfortunately, this is far from ideal. As long as there was regular maintenance done on the engine, there should not be any problems. was updated under the EVO name and replaced the Basically, the engine has no typical faults, but the typical consequences of years of use and neglect (leaks, dirt, less frequently stretched timing chains) are encountered. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. gas recirculation, and particulate filters.. 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 . turbine geometry) stage 3, Intake air throttling via the throttle valve actuator (only We have tips on removing carbon build up. 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. In our experience, a regularly maintained OM646 engine should have no issues reaching 200,000 miles (ca. Entdecken Sie KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in der groen Auswahl bei eBay. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. To improve engine starting, ceramic glow plugs began to be used. They are all sold as a single kit. The durability of the structure itself is very high. engines. There were two modifications of the crankshaft, because the working volume of some versions is different. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. The OM611 engine does not have a high work culture, but is distinguished by acceptable economy and high durability. 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. Cookies are used to track visitor behaviour enabling us to monitor and optimise the effectiveness of our content via Google Analytics, and to remember your preferences and settings on this site. I usually find intake manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good intake manifold. Since a special stand is required. 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 this article I will not discuss it, although from a technical point of view it is the same. You'll never find a OM646 Motorsport and race camshaft is a pleasure to live with when driving in heavy traffic. Their pistons are exactly the same. Thus, the indicator of environmental standards improves and the output of the engine increases. Proceed to testing low side system pressure. Where did the application come from? The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. Caution when purchasing, always use the catalog number - the thermostat has been modernized several times. 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 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. Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. 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. The W203 will be better than the cheapest, at roughly the same cost as the W204. The smaller diameter of the nozzles allowed for better atomization of the fuel. The item is your responsibility until it reaches us. Uncontrolled leakage of antifreeze can cause the engine to overheat. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. Definition. 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. The crankshaft of the OM646 is forged, so its built to last. OM647 and OM648 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 makes engine repairs much cheaper. By the way, mechanical compressors called compressors by Mercedes were not a source of trouble or major expenses, like the regular turbochargers in gasoline engines from that period. Sorry, in order to post a comment, you must be logged in. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. 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! 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 faulty pump must be replaced. The new engine was the first common rail Mercedes diesel engine. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. In the most severe cases, the crankshaft cracks. The diesel compression ratio was lowered from 18.0 to 17.5. The engine was equipped with a Common Rail 2 fuel system. This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. Nozzles break down about 50.000 km. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. 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. Few problems should happen as long as they are regularly serviced and maintained. The turbine and floating flywheel rarely manage to cover 150000 km. 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. We asked them for a statement and received the following: "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can . Unfortunately, suffers from oil spills and leaks. Our advertising partners also use cookies. In comparison, the new Delphi injector costs $ 450. Sign up now!!! The fuel system provided 2 pilot injections. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. If you continue to use this site we will assume that you are happy with it. Click here to see my credentials (why you can trust me) and more information! Help us improve, leave a suggestion or tip. Adding a supercharger or additional turbo will make large bhp and torque gains, although more difficult to install. Repair costs around $ 135. Additional performance features include an electric fuel pump, exhaust Buying such a model is very risky. Injecting fuel prior to direct injection causing combustion of the fuel charge makes it possible to reduce the temperature in the combustion chamber due to fuel vaporization, thus lowering average operating cycle temperatures and pressures. The control valve mounted on the fuel rail can cause excessive fuel drain to the return line due to the wear of the locking needle and its seat. Extensive global service network of Mercedes-Benz workshops. 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. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. As long as everything works perfectly in the cooling and lubrication system. Thank you very much. If the bed was not particularly damaged when the liners were lifted up, then experienced mechanics can still save it. Which helps us keep our guides and tips up to date helping others with their modified car projects. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. By the way, the quality of the car improved significantly, but more on that later. Specifications and Modifications. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. This can lead to erratic engine behaviour. 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 biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. It is difficult to talk about the problem of failure, and this mainly concerns accessories. Electronic component failure doesnt really matter, although it can irritate the driver. However engines will need better parts at higher power limits.Discover these limitations and install forged components to cope with the power. A number of solutions included in the TwinPulse name are used. Soon it turned out that another defect involved the time chain seal. Then you will pay about $500 for parts alone. Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Problems with the throttle and pneumothorax are also typical. To keep us running PLEASE Donate here. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007.
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