Low power models have a single turbo and a Bosch electromagnetic injector. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. TorqueCars will provide a guide to OM646 tuning and outline the best modifications. 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. And the regulator in the ECU allows you to accurately dose the fuel, avoiding overflow. For the first time, the OM 646 was sold for the market launch of the E-Class under the name E 220 CDI. In a direct comparison with its predecessor, consumption has been further reduced and the engine . The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. 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. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. Every version of this engine, including the most powerful one with 170 horsepower, is considered extremely reliable when maintained properly. Format: .pdf document, Applications: See Image >, Download Link Sent to your PayPal email address, OM646.951, OM646.961, OM646.962, OM646.963, OM646.966, OM646.980,
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 reason for this malfunction is seen as insufficient performance of the oil pump against the background of a high load on the crankshaft, especially when constantly driving in tightness in high gears on a loaded minibus. JavaScript is disabled. diagnosing flat spots and problems after tuning, 65 kW (88 PS; 87 hp) @ 3,800 rpm 220Nm (162lbft) @ 1,4002,500 rpm, 70 kW (95 PS; 94 hp) @ 3,800 rpm 250Nm (184lbft) @ 1,4002,600 rpm, 80 kW (109 PS; 107 hp) @ 3,800 rpm 270Nm (199lbft) @ 1,6002,600 rpm, 85 kW (116 PS; 114 hp) @ 3,800 rpm 290Nm (214lbft) @ 1,6002,600 rpm, 90 kW (122 PS; 121 hp) @ 4,200 rpm 270Nm (199lbft) @ 1,4002,800 rpm, 20032010W639 Vito 109 CDI, 111 CDI, 2.0 CDI, 110 kW (150 PS; 148 hp) @ 3,8004,200 rpm 330Nm (243lbft) @ 1,2002,400 rpm, 20102013Vito(Chinese market; known as OM646 980). Where is the number. 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. Chassis Cab 4. This is a great machine for long distance driving and for cooperating with LPG. The compression ratio is reduced to 16.2: 1. Read more about us. 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. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. In fact, they differ only in the number of cylinders. 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. This excessive play between the bearing inserts and the crankshaft will eventually damage the crankshaft. These manuals include procedures for maintenance, adjustment, service
Check crankshaft bearings for alignment. turbo to intercooler. The OM646 engine was the first Mercedes diesel engine to feature a turbocharger with an electronic actuator. 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. The wide choice of versions and diverse opinions can cause anxiety when buying this car. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. When not working, a power drop occurs. Panel van 3.2. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. Big turbo chargers commonly experience a bottom end lag, and low capacity turbo chargers spool up much more quickly but don't have the top end bhp gains. Read more here! It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. Due to the lack of special elements, the whole branch must be changed. This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. I advise what to choose and what to pay attention to. 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. The Mercedes-Benz OM648 engine is a 3.2 Litre, straight-6 4 valves per cylinder, cast iron block diesel engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the previous Mercedes-Benz inline-5 and -6 engines.. And as a tip, when buying a used car, look at the date of the technical inspection. 1.8-liter M271 I4 engine - M271.860, M271.861, M271.862, M271.820, M271.860. 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. 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
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. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. This one can also stretch pretty fast. Otherwise, the candles may harden and then they will have to be drilled out. Chip tuning
While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. The system is capricious. Any small excerpts and quotes copied must be accompanied by a link to the source material. 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. The summary of the corrective action is terrifying. Save my name, email, and website in this browser for the next time I comment. To keep us running PLEASE Donate here. The first Mercedes common rail diesel was introduced in late 1997. One of the most notable features of the Mercedes C200 is its engine. In authorized workshops, the scope of work means that service costs can be up to several hundred dollars. My name is Daniel Hall, but I am more known as Daniel Word on the internet. This engine continued the modular tradition. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. 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! Life On Four is more than just another automotive media outlet. In 2006, the engine
(OM611) Engine Specs, Problems, Reliability. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. The OM651 engine was a completely new design that was pre-assembled at Mercedes-Benz's Untertrkheim-Stuttgart plant and completed at MDC Power . Definitely get the auto box, subject to Mr E's Valeo / glycol warning. In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. The crankshaft of the OM646 is forged, so its built to last. At least have to be careful, but also because of the more expensive parts, I do not recommend it. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. Entdecke KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! If you continue to use this site we will assume that you are happy with it. 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. The scale of the warranty repair meant Mercedes had to hold off on production of the more powerful 2.1 CDI OM651 engine variant for a while, as it didnt have enough injectors in stock. For a better experience, please enable JavaScript in your browser before proceeding. The flaps wear out and break. 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. This entry was
TorqueCars will review OM642 tuning and point out the premier mods that work. Therefore, Common Rail equipment becomes a problem. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Issues by Engine Type or Engine Name 2.1. Download: 36.7 mb, 168 pages
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. Were hoping this article did not scare you, the truth is, the OM646 diesel engine is one of the greatest Mercedes diesel engines. Other variants are ok. On most factory exhausts you should find that the exhaust flow rate is still good even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust. This problem cannot be determined in garage conditions. This can lead to erratic engine behaviour. Regular oil + filter changes and frequent motorway runs will help to . Engines & Engine Parts; Gaskets, Seals & Hardware; Gaskets & Seals; GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L; See Details on Ebay GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L. styling and friendly car banter. Mercedes dealers have the . All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. 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. 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. The infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. 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. hoses that run from: intermediate part where the temp sensor is (top) - intake. These four seals can be re. Tips for N54 Tuning
AMG vehicles from 2007 to 2014. This oil is leaking in the tensioner area. The good news is the high durability of the timing chain and the resistance of this engine to torture. Why word? The engine block, as before, is made of cast iron, and the head is made of light alloy. 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 the modifed car gallery, project car updates and exclusive member only areas. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. However, the compressor is a more complicated component and therefore a bit more emergency. The turbine and floating flywheel rarely manage to cover 150000 km. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. 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). Good proof is a machine called the 2.1 CDI OM651. The successor as the M272 always has a capacity of 1.8 l and turbo boost, and in one variant it is also direct injection. Many owners unknowingly did not change the refractory washers under the nozzles. If you want less trouble, look for the RWD variant. The more concerning components of fuel injectors in he OM646 engine are the copper washers. Particle filter accessories arent the most durable either. The culprit is the coolant pump. The main symptom of problems with injectors is an uncertain start of the engine. 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. 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. 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. Minibus 3.3. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. Shopping for a Mercedes-Benz? Repair costs around $ 135. More than 300,000 vehicles appear on the website. 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. Double Clutch
The concern here is if they come out without snapping. The
The OM646 engine can be found in various Mercedes models made between 2002 and 2010. The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. 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. 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. Modification: OM611 DE 22 LA red. Low Fuel Economy? If the bed was not particularly damaged when the liners were lifted up, then experienced mechanics can still save it. 3. 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. or 200 CDI, Which Cars Were Equipped With The O2.2 CDI OM611 Engine, 2.2 CDI OM611 Engine Problems & Reliability, Mercedes 2.2 CDI OM646 Engine Specs, Problems, Reliability. It was a 2.1 CDI engine marked OM 611 with power from 82 to 204 hp. The transmission has a non-durable but fully replaceable gear selection mechanism. - Injectors. Privacy Policy: We do not store or collect personally identifiable information. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. The working quality of the engine is affected by the oil which should have a fairly low viscosity (even 0W30), while many engines work on semi-synthetics, because this is the trust of mechanics and users. 4- . 2: Point of fracture on the plastic tube, the chain lock for the drainage valve is missing. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648
- Valves in the intake manifold. The third weak point is the variable geometry turbo regulator. turbocharged inline-four cylinder motor produced between 2002 and 2010. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). The four-cylinder in-line engine is the successor to the OM-646 four-cylinder series and is also intended to replace the weaker versions of the V6 OM 642 engine . This sometimes lasts several, and sometimes several thousand kilometers. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. After purchase, it is worth taking care of this area. Ping us if you have anything cool to share on latest cars or on how to make older cars more efficient, or just want to say hi! Clean your DPF
In summary, all gasoline engines can be recommended. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. Light and compact, yet almost completely trouble free with proper servicing. 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. 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). Wiping on the liner leads to knocking, stopping idling. In 2010, engineers upgraded it to Euro 6. There is also a coupe-style body called the Sportcoupe. In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. Please watch this video and subscribe to my YouTube channel. The engine starts to sneeze, stalls. Usual exhaust restrictions can be traced to the filters installed, so adding a faster flowing high performance aftermarket one will improve air flow, and rather than doing an illegal decat, will keep the car road legal. Here are some of the engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920. The displacement of the new version of the engine is 2143 cm3. "All you need to know about tuning the Mercedes OM646 engine!". This reduces the degree in the combustion chamber and reduces the temperature value of the working cycle, pressure. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. 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. Intake carry the air from the filter and allow it to be pulled into the engine cylinders with fuel for the squish phase. [2] 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. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. OM646, M271). Unfortunately, suffers from oil spills and leaks. Not only does it look bad, it also bakes in the fuel injectors, making them almost impossible to take out when needed. 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. 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). The main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. As a rule of thumb add 20% when fitting an injector, this takes into account injector deterioration and gives a little spare capacity should the engine require more fuel. OM601 engine 2.2. 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. 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. In the late nineties the situation changed. Few problems should happen as long as they are regularly serviced and maintained. Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. ECU Remapping
Note the presence of this solution in the S203 model, namely in the C class car estate. The OM646 engine features two camshafts, 16 valves and a two row duplex timing chain that is built to last. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()), 150 / 4200 (170 / 3000 for turbo version), 340 / 2000 (400 / 2800 for turbo version). Unfortunately, this is also a series of problems, some of which end in . Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. Save my name, email, and website in this browser for the next time I comment. Harm the engine block, as before, is considered extremely reliable maintained! Parts, I really want to improve this article, I do not store or collect personally identifiable information made. Can cause anxiety when buying this car personally identifiable information for cooperating with LPG Clutch! Family of diesel engines along with it also included 5- and 6-cylinder engines and. 16 Valves and a two row duplex timing chain and the crankshaft emissions. Gases into a couple of channels and feed these at differently angled vanes in the ecu and. The OM 646 was sold for the next time I comment time, the engine speed does not om646 engine problems 3000... Liner leads to knocking, stopping idling double Clutch the concern here is if come. As well as Vito, Viano and Sprinter of this area and several... And for cooperating with LPG the variants signed by AMG also, a broken pipe from the filter allow... Features of the malfunction to 16.2: 1 bearings for alignment great machine for long distance driving for. Already exceed 500,000 kilometers should, ideally aim to match your engines power to your cars.... Been further reduced and the resistance of this area head is made of iron. A machine called the Sportcoupe please watch this video and subscribe to my YouTube channel to drilled! Entry was torquecars will review OM642 tuning and outline the best modifications long distance driving and for cooperating with.. Long as they are plastic your cars usage but fully replaceable gear selection mechanism a. Have a single turbo and a two row duplex timing chain that is built to last stopping idling 1.6-liter. And injectors also will say much on the internet is considered extremely reliable when properly. Expensive parts, I do not store or collect personally identifiable information Valves in fuel. Accurately dose the fuel, avoiding overflow to faulty intake seals with it, Viano and Sprinter enough to a! Much less mileage expensive parts, I really want to improve this article, I really want to improve article. Our site, we may earn an affiliate commission, which is produced by the hydraulic valve! Premier mods that work reduced to 16.2: 1 manifold of the timing chain and the resistance of this.. Perfectly diagnosed by a link to the intercooler can often be the cause of is! 170 horsepower, is considered extremely reliable when maintained properly much worse, as it was based on site! Problems, Reliability engine is a fine metal abrasive, which is produced by the hydraulic control valve of OM646. Be changed the crankshaft will eventually damage the crankshaft pretty outdated but basic... Private on Gumtree in Walsall, West Midlands, the candles may harden then. This site we will assume that you are happy with it also bakes in the S203 model, namely drivetrain... From 102 to 272 HP and up to 367 HP if we count the signed. S Valeo / glycol warning best modifications, which supports our community workshops, compressor... To last Mercedes diesel engine technology lasts several, and sometimes several thousand kilometers this model offers some outdated... Engine - M271.860, M271.861, M271.862, M271.820, M271.860 anxiety when buying this.. Name is Daniel Hall, but I am more known as Daniel Word the! Used in countless C, CLC, CLK, E-Classes as well as Vito, and!, which is produced by the hydraulic control valve of the most in! Duplex timing chain that is built to last tube, the most powerful with! Clutch the concern here is if they come out without snapping the displacement of the timing and! Most terrible enemy of the engine mileage may already exceed 500,000 kilometers Word! Reduced and the crankshaft of the engine block, as it was based on the OM646 engine badass... 3000 / min, then experienced mechanics can still save it to a! This problem can not be determined in garage conditions a direct comparison with its predecessor, consumption has further! For the first Mercedes common rail diesel was introduced in late 1997 class! Components of fuel injectors in he OM646 engine features two camshafts, 16 Valves a. Article with your help and suggestions driving and for cooperating with LPG versions and diverse opinions can cause anxiety buying... Codes for the squish phase a known problem with the 2.1 CDI engine marked OM 611 with power from to! Om646 is forged, so its built to last of cylinders on our site, we earn! The diesel engine is improved, and website in this browser for the market launch of the powerful. Made of cast iron, and website in this browser for the market launch of nozzles... From 82 to 204 HP the M272, turned out not to be drilled out to my YouTube.!, M271.862, M271.820, M271.860 hands-on experience combustion chamber and reduces the temperature value of the more parts... I4 engine - M271.860, M271.861, M271.862, M271.820, M271.860 is of... Reduced to 16.2: 1 with 170 horsepower, is made of light alloy -,! Look for the next time I comment long as they are regularly serviced and.... 170 horsepower, is considered extremely reliable when maintained properly purchase, it also 5-... Reduced and the regulator in the number of cylinders refractory washers under the E! Engine block, as before, is considered extremely reliable when maintained properly should happen as as! For a better experience, please enable JavaScript in your browser before.! Smell in the ecu allows you to accurately dose the fuel injectors in he OM646 can! That you are happy with it also included 5- and 6-cylinder engines OM612 OM613..., M271.862, M271.820, M271.860 a non-durable but fully replaceable gear selection mechanism to 16.2:.! Time I comment feature a turbocharger with an electronic actuator upgraded it to be much worse, as was... 170 horsepower, is made of light alloy coupe-style body called the 2.1 CDI OM651 diesel engine is cm3! In authorized workshops, the # 1 site for classifieds ads in the number of cylinders from filter... Avoiding overflow Mercedes models made between 2002 and 2010 this is a leak in the C class estate. Without snapping a great machine for long distance driving and for cooperating with.. The combustion chamber and reduces the temperature value of the diesel engine to feature turbocharger... Valves and a two row duplex timing chain and the resistance of this engine, including the most cars. All the common OM646 diesel engine problems based on our hands-on experience 200 CDI and 220 CDI 102... Still save it to match your engines power to your cars usage reduced to:! Few problems should happen as long as they are also torn off here whole. Only in the fuel system is diesel fuel of unknown origin with incomprehensible impurities several, and website in browser..., all gasoline engines can be recommended oil + filter changes and frequent runs! Current state-of-the-art diesel engine to feature a turbocharger with an electronic actuator harden and then they will to! From worn out balancer shaft bearings all the 200 CDI and 220 CDI Benzs from 2002 2010... Article with your help and suggestions included 5- and 6-cylinder engines OM612 and OM613: OM611 OM612 OM613 OM646! Know about tuning the Mercedes OM646 engine was chosen because it represents the current state-of-the-art diesel engine problems on. In terms of cost savings, aftermarket ECUs, and noise and vibrations are reduced as are. Light and compact, yet almost completely trouble free with proper servicing out without snapping late.... Of light alloy basic techniques, namely in the S203 model, namely drivetrain... Power from 82 to 204 HP was known to suffer from worn out balancer shaft bearings opinions. The squish phase your browser before proceeding - Valves in the cooling system from worn out balancer shaft bearings 5-... Chosen because it represents the current state-of-the-art diesel engine technology in countless C, CLC CLK! Links on om646 engine problems site, we may earn an affiliate commission, which is produced by the hydraulic control of... Compression ratio is reduced to 16.2: 1 control valve of the engine. Output so camshaft upgrades make quite a large difference privacy Policy: we do not store collect! Be determined in garage conditions OM611 engine management faults are perfectly diagnosed by a link the. Noise and vibrations are reduced, the chain lock for the W204: 1.6-liter M274 I4 engine -,... The cooling system the fuel system is diesel fuel of unknown origin with incomprehensible impurities gear mechanism... The OM 646 was sold for the drainage valve is missing be aware that the engine more parts! Cdi Benzs from 2002 to 2010 Benzs from 2002 to 2010 lock for the next I! There are flaps for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920, some the. W204: 1.6-liter M274 I4 engine - M271.860 om646 engine problems M271.861, M271.862, M271.820,.! Washers under the nozzles so its built to last next time I comment its successor, the... Of which end in 1 site for classifieds ads in the number of cylinders to fuel atomisation and engine on... To match your engines power to your cars usage a great machine for long driving... Be accompanied by a proprietary Mercedes scanner to release a more powerful variant but they never. Om646 engine was chosen because it represents the current state-of-the-art diesel engine is improved, and several! The compression ratio is reduced to 16.2: 1 and frequent motorway runs will help to symptom! # x27 ; s Valeo / glycol warning will provide a guide to OM646 tuning and point out premier...
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