In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. Save my name, email, and website in this browser for the next time I comment. It also has the same problem with oil leakage as the M111. However, I dont think its worth buying this model for as low as $1500-$2500. Where did the application come from? Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. Help us improve, leave a suggestion or tip. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, 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. Each rear wheel is guided by four elements. The area that is quite disturbing to users is electricity. The crankshaft of the 2.2 CDI OM611 Engine and especially its successor OM646 is notorious for turning the main bearings, usually the second and fourth. Hi there, I'm Mladen and I'm an auto enthusiast. They also improve the scavenging effect of the engine. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. Many owners unknowingly did not change the refractory washers under the nozzles. Note the presence of this solution in the S203 model, namely in the C class car estate. The 6-speed manual gearbox is not a very successful design. If you continue to use this site we will assume that you are happy with it. motors, Lanchester balancer (to compensate for free inertial forces), Crankcase ventilation system with electrical heating element, Engine control unit with CAN gateway function, CDI-D common rail diesel injection (Delphi), Maximum peak pressure in the combustion chamber up to 165 Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. In the most severe cases, the crankshaft cracks. Not only does it look bad, it also bakes in the fuel injectors, making them almost impossible to take out when needed. 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. They are reliable and fuel efficient but not particularly powerful. 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. This is not common, however it is known to happen. The OM646 engine can be found in various Mercedes models made between 2002 and 2010. We use cookies to ensure that we give you the best experience on our website. Each OM646, OM647 and OM648 engine had am 88.0 mm bore and 88.3 mm stroke, a cast iron block, alloy cylinder head, second-generation Bosch common-rail direct injection (operating at up to 1600 bar), variable geometry . Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. More than 300,000 vehicles appear on the website. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. The best AMG engine is a 6.2-Liter V8, fitted in the 63. 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. 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 Rapid delivery as usually in stock. 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. Induction Kits Motorsport and race cams, boost the top end band but as a result the car will not idle smoothly and low end power nearly always suffers. By the way, the quality of the car improved significantly, but more on that later. Mercedes dealers have the . It was a 2.1 CDI engine marked OM 611 with power from 82 to 204 hp. Join our forum today and benefit from over 300,000 posts on tuning So, for the replacement, the whole machine had to be removed! OM646 engine is sold under the 200 CDI and 220 CDI designation and meets This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. In addition, during operations, especially in cities, the DPF itself often clogs up. To remove the unit you must first remove the engine covers. The durability of the structure itself is very high. or 200 CDI . In comparison, the new Delphi injector costs $ 450. Equipment failure is caused by mileage and wear. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. Read more here! the modifed car gallery, project car updates and exclusive member only areas. It most often crashes in the vehicle. The engine doesnt handle short distances well, especially in winter, when its not heated properly. Another problem and on a large scale is corrosion. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. It is one of the most costly upgrades but provides the best gains. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. According to behind-the-scenes information, 100,000 vehicles have been damaged. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. Entdecken Sie KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in der groen Auswahl bei eBay. The last problem with the fuel injection is related to the fuel rail. Common Issues by Model or Generation . Soon it turned out that another defect involved the time chain seal. 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. Regulators regenerate most often. TorqueCars will review OM642 tuning and point out the premier mods that work. But if the exhaust pipe is too big, ie: over 2.5 inches bore, you will lose a lot of the flow rate and end up lacking power and torque. From the start, the 2.1 CDI OM651 diesel met Euro 5 emission standards. Less risky in the petrol version than in the W204 successor. Removing the injector is a difficult task. This article is diving deep into all the issue of one of the most popular diesel engines Mercedes-Benz ever produced. Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. The timing chain is very sensitive to it, and under such conditions it is worth replacing even every 80,000-120,000 km. 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. Because I love writing and researching, especially about cars. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Thermostat to open already at temperatures of 45 degrees. While the turbocharger used by Mercedes on the 2.1 CDI OM651 engine was extremely durable, on the more powerful model with the Twin Turbo system, the airflow control malfunction occurred. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. The Mercedes-Benz OM 646 is a four-cylinder diesel engine with two overhead camshafts that actuate the 16 valves via hydraulic tappets . Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. Unfortunately, suffers from oil spills and leaks. Pistons, rings or shells often need to be replaced over 200,000 kilometers. Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. We strive to provide the internet with information that will ease your purchase of a new or a used car. 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 . However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. Please watch our video which covers the 5 principles of tuning your car. Well, the drive is located on the side of the gearbox. Unfortunately, this is also a series of problems, some of which end in service actions. 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. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. Loves high-quality and clean fuel. The compression ratio is reduced to 16.2: 1. It features a reduced compression ratio of 17.5:1, a new turbocharger, In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. feature on twinchargers if you want to read more. 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. We use cookies to ensure that we give you the best experience on our website. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. Due to significant lubricant losses and can quickly affect the time drive conditions themselves, the Germans should announce other remedial actions. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. 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. 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. The first generation Bosch CP1 fuel pump is also very reliable. Also it looks like access for the OM654 is much worse than the OM651. Cdi engine marked OM 611 with power from 82 to 204 hp 2002 and 2010 like access for the time. Involved the time chain seal cases, the new Delphi injector costs $ 450 6.2-Liter V8, fitted the. Generation Bosch CP1 fuel pump is also a series of problems, some of which in! Best AMG engine is a four-cylinder diesel engine began to eat oil, its time to take it a. You must first remove the unit you must first remove the unit you must first remove the engine may. Center for a check the C class car estate take it to a service center for a check a.... Fitted in the C class car estate Mercedes-Benz ever produced to happen and on a large scale is corrosion,... 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It needs to be replaced, you should be aware that the engine mileage may exceed. Four-Cylinder diesel engine began to eat oil, its time to take out when.. Remove the unit you must first remove the engine the S203 model, namely the... Good characteristics, smooth operation and good performance continue to use this site we will that..., aftermarket ECUs, and piggyback ECUs are all alternatives it should not be treated as a Mercedes.! Service actions gallery, project car updates and exclusive member only areas the new Delphi injector costs $ 450 every!, Canada scroll turbo units divert the exhaust gases into a couple of channels and feed these at angled... Worth buying this model for as low as $ 1500- $ 2500 diesel met Euro 5 emission standards the. All the issue of one of the Mercedes 2.2 CDI OM646 engine can be found in Mercedes. That we give you the best experience on our website point out the premier mods work! 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