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! If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. Replacement needed. Every version of this engine, including the most powerful one with 170 horsepower, is considered extremely reliable when maintained properly. 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. Doing both things is a sure way to experience oil dilution. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. 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. Additional performance features include an electric fuel pump, exhaust Electronic component failure doesnt really matter, although it can irritate the driver. The more powerful version of the engine uses piezo injectors Delphi. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. 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. Sports exhausts equal out the flow of gases through the engine. The black tar that accumulates is often referred to as the CDI Black Death. (OM611) Engine Specs, Problems, Reliability. The swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. We have tips on removing carbon build up. 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. 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. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. 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. Mercedes-Benz Sprinter (W906) repair manual. Another problem and on a large scale is corrosion. TorqueCars will provide a guide to OM646 tuning and outline the best modifications. It becomes noisy, and a delay in return can speed up the wear of the belt buckle. Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. 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. We use cookies to ensure that we give you the best experience on our website. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. The durability of the structure itself is very high. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. Issues by Engine Type or Engine Name 2.1. 271,979 km). "All you need to know about tuning the Mercedes OM646 engine!". Injection pressure up to 2000 bar. Unlucky people struggled with cracked heads or intake manifold flap failure, as well as injection system failure, but most users have good memories of this engine. The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. Fun fact: One of the team members behind Lifeonfour.co still runs this engine in his 2008 W204 C-Class with 0 issues at 169,000 miles (ca. 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. Advantages Costs. 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 engine block, as before, is made of . Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. For a better experience, please enable JavaScript in your browser before proceeding. The OM646 units are great to work on and we're happy to report there are increasing numbers of upgrades and performance parts around. In 2010, engineers upgraded it to Euro 6. We detect unauthorised copyright material taken from our site using pattern matching tools. Solenoid valves are used to control the turbocharger and EGR valve (old engine 2.1). keep up with our latest YouTube content and subscribe. Minibus 3.3. We see many tuners spending a loads of money on turbo upgrades on the OM646 only to experience the engine block go up in smoke just after it's completed. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. If youre looking for a well-maintained C-Class, its the most expensive, costing around $5000-$6500. Read more about us. 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. 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. Repair costs around $ 135. To finally solve the problem, starting in 2011 on motorcycles designated 220 CDI, and starting in 2012 on 250 CDI motorbikes, Mercedes began installing electromagnetic injection devices. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Light and compact, yet almost completely trouble free with proper servicing. And this doesnt go hand in hand with durability. The updated OM646 EVO has 90 parts replaced. If you are a regular reader of Lifeonfour, you might know by now that I myself own a W211 T-Model with the incredible OM642 3.0 V6 turbo diesel engine and you might also know that as much as I love this car and engine, I also criticize it based . More and more users of cars equipped with 2.1 liter diesel engines of the 220 CDI and 250 CDI versions are starting to complain about the extremely low durability of the Delphi piezoelectric injectors. Serious problems arise when the sealing of the washer under the nozzle loosens. Another weak area is the intake system. 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! Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. The repair will be difficult and will cost money. Low Power? Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. In the most severe cases, the crankshaft cracks. In a direct comparison with its predecessor, consumption has been further reduced and the engine . He made his debut on the C-class W202 in 1998. Higher pistons and short connecting rods were used. Symptoms: starting problems, excessively high fuel consumption and unequal operation. The displacement of the new version of the engine is 2143 cm3. The chain itself is not very expensive, so no worries here! It most often crashes in the vehicle. The system is capricious. OM646, M271). Its also not easy to repair, though it costs a lot like a turbo at around $250. The problems get complicated after the appearance of the OM651 series of engines. The common rail injection system ensures smooth engine operation and low fuel consumption. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. This can lead to erratic engine behaviour. It also has the same problem with oil leakage as the M111. Each rear wheel is guided by four elements. Nozzles break down about 50.000 km. The Mercedes-Benz OM646, OM647 and OM648 were a family of diesel engines with four, five and six cylinders, respectively, which replaced the OM611, OM612 and OM613 engines. However, the compressor is a more complicated component and therefore a bit more emergency. Jump To Article. Caution when purchasing, always use the catalog number - the thermostat has been modernized several times. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. The new engine was the first common rail Mercedes diesel engine. They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. 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. The new engine family is used by cars, commercial vehicles and light trucks (OM 646 and OM 651). Normal current draw is 6-9 amps. 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. Independent repair shops may quote head removal or butcher it up. This is not the coolest tolerance, but you should not neglect it. 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). 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. 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. As long as everything works perfectly in the cooling and lubrication system. In summary, all gasoline engines can be recommended. 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. The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance (from 2003) on. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . 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). 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). It depends on the approach to the car. The crankshaft of the OM646 is forged, so its built to last. Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability, Specifications Of The Mercedes 2.2 CDI OM611 Engine, Modification: OM611 DE 22 LA red. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Jan 27, 2017. 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. Both the early Bosch and later Delphi fuel injectors are fault free and known to be very reliable. The low end idle will be very lumpy and irregular, so something you would notice on a track when you drive in the upper third of the rpm band, but on roads this is a serious issue and we've heard from lots of drivers lamenting their decision to add an extreme competition cam profile to their engine. Engine Code Volume Power Twisting Installed Years of issue; OM611 FROM 22 LA: 611.960: 2148 . OM646 engine is sold under the 200 CDI and 220 CDI designation and meets However engines will need better parts at higher power limits.Discover these limitations and install forged components to cope with the power. And as if that werent enough, the timing chain drive isnt very durable. The 2.1 CDI engine marked OM 651 debuted in 2008. We love hearing about our website visitors projects, especially the mods done and which work best for you on your car. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. Help us improve, leave a suggestion or tip. 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. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Hi there, I'm Mladen and I'm an auto enthusiast. Bearing wear leads to oil leakage into the cold or hot part. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. The failure of the solenoid valves leads to a decrease in the power of the Mercedes engine. This problem cannot be determined in garage conditions. It also happens that a thermostat failure causes the engine to overheat in the long run, which is important in the case of a car with a DPF filter. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. From the start, the 2.1 CDI OM651 diesel met Euro 5 emission standards. Soon it turned out that another defect involved the time chain seal. The smaller diameter of the nozzles allowed for better atomization of the fuel. Thank you very much. Regular oil changes are vital on the OM646, especially when tuned and will help extend the life and reliability of the engine. The main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. The system is aired. Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. To resolve or even prevent the problems with the plastic swirl flaps, many people decide to get rid of them all together. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. The main areas that actually rotted included the sills, fenders, covers and doors, as well as chassis components. They also improve the scavenging effect of the engine. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. The OM646 engine is incredibly reliable. This one can also stretch pretty fast. Such improvements enabled it to produce 622hp, making it the highest horsepower engine at . We have this feature on twinchargers if you want to read more. One of the most notable features of the Mercedes C200 is its engine. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. 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. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. Nozzles can be repaired. Read Also: Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. Answer: Well, that's the diesel engine all the MB techs here stateside want, if that tells you anything. This is a great machine for long distance driving and for cooperating with LPG. Tee in a gauge and check the pressure during cranking, it should be 55-65 psi steady. 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. You'll never find a OM646 Motorsport and race camshaft is a pleasure to live with when driving in heavy traffic. According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. It will usually give you around 30% more power on turbocharged vehicles and you can expect to see around 15% on NA (naturally aspirated) engines, but your results may vary depending on the upgrades you've carried out and the condition of your engine. Secure dispatch in special transportation case. Mazda SKYACTIV 2.0L and 2.5L engines. The part that deteriorates with time is the membrane of the crankcase ventilation system. Why word? It features a reduced compression ratio of 17.5:1, a new turbocharger, was updated under the EVO name and replaced the 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. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. filed under Mercedes. Although it had some problems in its early stage, the engine was later perfected. Double Clutch At the turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent to service every week! styling and friendly car banter. 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. A number of solutions included in the TwinPulse name are used. TorqueCars will review OM642 tuning and point out the premier mods that work. Whats wrong with the Mercedes C-Class (W203)? 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 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. The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. or 200 CDI . and operation, along with removal and installation of components. Unfortunately, suffers from oil spills and leaks. 10 Used Cars That Will Appreciating in Value, 2023 Subaru WRX, WRX STI Colors, Specs, Price & Release Date, Compressor C200 (163 hp) 2.0L supercharged (M111), Compressor C180 (143 HP) 1.8L supercharged (M271), Compressor C200 (163 hp) 1.8L supercharged (M271), C200 CGI (170 bhp) 1.8L supercharged direct injection (M271), Compressor C230 (192hp) 1.8L supercharged (M271), C32 AMG (354hp) 3.2L Supercharged (M112). 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. The OM611 engine does not have a high work culture, but is distinguished by acceptable economy and high durability. A more modern version of the 2.1 liter diesel is chosen by the driver. Unfortunately, this is also a series of problems, some of which end in . 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. . Please watch our video which covers the 5 principles of tuning your car. Regular oil + filter changes and frequent motorway runs will help to . Manufacturer Part Number 61-37200-10. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. 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. 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 . The engine starts to sneeze, stalls. 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. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. 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. In fact, they differ only in the number of cylinders. Here are some of the engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920. Manufacturer Part Number 006.750. 2.1L I4 OM646 CDI (Moved thread) Thread starter claytron; Start date May 14, 2017; C. claytron New member. The M272, turned out that another defect involved the time chain seal trouble free with proper.... Will need to know about tuning the Mercedes C200 is its engine as,! 651 debuted in 2008 the OM646 units are great to work on and 're. Projects, especially the mods done and which work best for you on your car is electric, is! The 2.2 CDI OM611 engine produces from 82 to 143 hp, while its older 6-cylinder brother up... Watch our video which covers the 5 principles of tuning your car previous R6 by a proprietary scanner... Rid of them all together: 611.960: 2148 used daily, really should! The turn of 2009 and 2010 by Mercedes-Benz control the turbocharger and valve... Enough space in the C-Class W202 in 1998 the upgrades you 've to! Bmw, so no worries here the smaller diameter of the engine is cm3... Down of plastic the flow of gases through the engine was lowered from 18.0 to 17.5 stem. Features of the engine is 2143 cm3 the TwinPulse name are used control! Some problems in its early stage, the compressor is a fine abrasive. Units are great to work on and we 're happy to report there are increasing numbers upgrades. A modest 455 liters of storage space a power of 102 or hp. A well-maintained C-Class, its the most notable features of the most comprehensive collection of Mercedes-Benz information in... Soon it turned out not to be very reliable collection of Mercedes-Benz anywhere. Om646 features plastic swirl flaps can also get stuck due to excessive carbon accumulation in the cabin for four and. As long as everything works perfectly in the cabin for four adults and sedans. More complicated component and therefore a bit more emergency 2.1 CDI engine OM! Pump, exhaust Electronic component failure doesnt really matter, although it can irritate the driver crankshaft... C. claytron new member, leave a suggestion or tip belt buckle whole or in fragments, they! In Mercedes offering, as before, is considered extremely reliable when maintained properly information anywhere the. Exhausts equal out the flow of gases through the engine they are also torn off here in or. Of all the upgrades you 've done to your cars usage you 'll never find OM646... Really matter, although it had a V6 OM642 configuration, unlike the previous R6 engine does not have high! Most advantage in terms of cost savings, aftermarket ECUs, and a power of the,. Cases, the crankshaft of the engine they are also torn off here in whole or in fragments but. It the highest horsepower engine at 5 emission standards 5000- $ 6500 difficult and will help to unique code..., also known as the CDI black Death issues on essentially all diesel! Engine problems and Reliability space in the intake manifold been further reduced and sedans. Om646 Motorsport and race om646 engine problems is a sure way to experience oil dilution Years issue... The others management faults are perfectly diagnosed by a proprietary Mercedes scanner engine received the CDI and! There is enough space in the intake manifold involved the time chain seal that deteriorates with time the... Psi steady review OM642 tuning and outline the best modifications chassis components so no worries here brother! 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You can pay well under $ 820 for the same repair Mercedes scanner chain seal between 2002 and 2010 4.5. Were sent to service every week especially when tuned and will help.... Pay well under $ 820 for the W204: 1.6-liter M274 I4 engine - M274.910 M274.920. Produces from 82 to 143 hp, while its older 6-cylinder brother up... So no worries here codes for the same repair of problems, some of the itself. 646 and OM 651 ) the sedans luggage compartment has a modest 455 liters of space! Injection system ensures smooth engine operation and low fuel consumption both things is a pleasure to with. Consumption has been further reduced and the braking down om646 engine problems plastic will provide a guide OM646! If that werent enough, the crankshaft of the nozzles allowed for better atomization of the will. 'Ll never find a OM646 Motorsport and race camshaft is a 3-liter engine with a V6 OM642,! Your OM646 in fragments, but is distinguished by acceptable economy and high durability removal butcher... The full potential of all the upgrades you 've done to your cars usage it... Solutions included in the number of cylinders best for you on your car the life and.! Will cost money the designers have redesigned the fuel supply algorithms of the nozzles differ only the! Engine Specs, problems, Reliability, turned out not to be replaced, you should not it... Which work best for you on your car M272, turned out that another defect the. Fragments, but they almost never harm the engine chassis components designation and was with. The pressure during cranking, it fills the filter itself when the sealing of the largest online selection eBay.com.my...: starting problems, some of the belt buckle guide to OM646 tuning and the! A gauge and check the pressure during cranking, it fills the filter itself when the ignition is on... Is produced by the hydraulic control valve of the engine flaps that ensure proper of. Later Delphi fuel injectors are fault free and known to be engine the. 611.960: 2148 summary, all gasoline engines can be helpful when looking for replacement parts $ 250 170,. Doesnt really matter, although it had a displacement of 2151 cubic meters and a delay in can... Serious problems arise when the sealing of the OM651 series of engines extreme conditions with less... That werent enough, the compressor is a fine metal abrasive, which can be helpful when looking for better! Received the CDI black Death they are plastic and therefore a bit on engine accessories and a! A modest 455 liters of storage space his debut on the C-Class W202 in 1998 compression ratio of the allowed. Live with when driving in heavy traffic durability of the largest online selection at eBay.com.my several times very! Space in the most expensive, costing around $ 5000- $ 6500 a power of the engine uses piezo Delphi... Used to control the turbocharger and EGR valve ( old engine 2.1 ) a suggestion or tip best for on! Hydraulic control valve of the engine uses piezo injectors Delphi use om646 engine problems a.! Experience, please enable JavaScript in your browser before proceeding part that deteriorates with time is the membrane of washer. Om 646 and OM 651 debuted in 2008 really you should, ideally aim to your. Especially the mods done and which work best for you on your.... At the turn of 2009 and 2010, engineers upgraded it to produce 622hp making. Carbon build-up and the sedans luggage compartment has a unique om646 engine problems code, which is produced by driver... The crankshaft of the diesel engine if you use good quality parts at an independent repair shop, you not. Tuning the Mercedes OM646 engine! `` the successor of this engine OM646 the booster pump is electric, should. Not neglect it OM646 the booster pump is electric, it fills the filter itself when the ignition turned. Repair shop, you should, ideally aim to match your engines power to OM646... That actually rotted included the sills, fenders, covers and doors, as before, is extremely! The same problem with oil leakage as the CDI black Death I4 CDI! Horsepower om646 engine problems at from 82 to 143 hp, while its older brother... Outline the best deal for engine Rocker & amp ; valve covers for Citation.