Thats why I compiled the list above in this way. You only need to boost your exhaust if the current exhaust is actually causing a restriction. Including the OM648 diesel. If not, get ready for leaks galore. If you continue to use this site we will assume that you are happy with it. Privacy Policy: We do not store or collect personally identifiable information. We strive to provide the internet with information that will ease your purchase of a new or a used car. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. This is a great machine for long distance driving and for cooperating with LPG. Lets find out whos right! Oil leaks are best fixed as they occur. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. I haven't seen the oil go bad yet, despite ripping apart HUGELY neglected engines from delivery vehicles and courriers etc. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. It would also be worth reading our unbiased Mercedes tuning articles to get insights into each modification and how effective they will be for your car. Mercedes Benz later introduced a failsafe mode in the event the CKP fails the CDI control unit can use the position of camshafts to determine the injection angle. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. Pre-Glow System Problems. Its even worse when you have to replace the entire drive with a variable phase wheel. Simple! The most crucial part is the use of correct engine oil, regular oil replacements and the correct use of this engine which involves a lot of long distance driving. MERCEDES OM 612 DE LA [612.963] MOTOR IDENT-NR. 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. Perhaps these vehicles are being properly serviced by the garage-not all the oil is being drained off and it is being changed while the oil is still cold, like 7 liters instead of the 10 L it really holds. A number of OM612 owners experience problems with the engine harness. 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. Read more here! Fast road cams are one of the most significant mechanical changes, but they must be installed by someone who knows what they're doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft. Large upgraded turbo chargers will usually experience low end lag, and little turbo chargers spool up quickly but won't have the top end power band gains. That is it, the majority of these issues are easily resolved or even completely prevented by adhering to the manufacturers maintenance plan and some additional care. Just about any CDI engine of this era, like the OM612 or the OM646, the OM648 is also prone to experiencing the infamous Black Death. Another thing to consider when buying a car is the rear suspension. If youre looking for something more powerful, its better to go for the M112 variant, say 170 HP, rather than the comparable 4 cylinder compressor. Yes, the Mercedes Benz 2.7 litre diesel is a reliable engine. Equipment failure is caused by mileage and wear. A very distinguishable aspect of the OM647 from the very similar OM612 predecessor is its intake manifold, and the lack of a diesel fuel feed pump. These cookies are required to enable core functionality such as security, network management, and accessibility. It now has 40k miles. All it does is it sends an electric current through a resistor to heat up the engine before ignition. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. The EGR valve can get blocked up by a mixture of carbon and oil deposits. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. By using a variable nozzle turbocharger, this unit produces 150 kW or 201 horsepower at 4200 RPM with 500 Nm or 369 lb ft of torque. A number of solutions included in the TwinPulse name are used. Choosing a higher performance camshaft profile raises the power band accordingly. ..serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply.. only thing i can say is they do seem to have poor service history. Induction Kits Crankcase position sensor. Chip tuning 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 . 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. This means that you can expect some issues that do come along with age and high mileage. Otherwise, the candles may harden and then they will have to be drilled out. It seems like it would be pretty straight forward being that it is replacing a 2.5 diesel I-5 with a 2.7 diesel I-5. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. I especially recommend this option for the more powerful and larger versions of the engine. 1. It was first used in the OM611 engine which was a 2.2-litre diesel engine producing 140 bhp and OM 612 which was based on the 611 continued to use the same injection system. It wasn't even a hot summer. Physically checking the electrical line and replacing or repairing the entire engine wiring harness was the only possible solution. I am very concerned with this engine. 1 Some help? The common fault is the swirl flap motor failing due to oil leaking from the turbo. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. There are common areas of failure for every engine, with some being very over engineered and some only able to handle stock power. Which models used the 2.7 litre Mercedes Benz diesel engine? However, the difference between the R4 and R5 is not big enough to release a more powerful variant. The blow by contains unburnt fuel and it mixes with the oil. The inline 5 cylinder OM612 was more powerful than the naturally aspirated OM 611. The Mercedes-Benz OM611, OM612 and OM613 were a family of diesel engines with four, five and six cylinders, respectively. The pre-glow system of the OM648 is in essence extremely simple and reliable. Whats wrong with the Mercedes C-Class (W203)? Tuning the Mercedes OM612 and best OM612 performance parts. The greatest OM612 parts on an engine are in our opinion the ones that give the best value for money. Keep in mind that despite being some of the best diesel engines ever, they are now at least 17 years old. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. Another problem is carbon and oil deposits. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. Modification OM 612 DE 27 LA: 5-cylinder, 2685 cm3, bore and stroke 88 and 88.3 mm, respectively, generation CDI II generation. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). In Tips for motorists. The larger petrol car family is also divided into the older (M112) and younger (M272), but here a change occurred with a facelift in 20042005. After purchase, it is worth taking care of this area. As a rule of thumb add another 20% when specifying an injector, this allows for injector deterioration and affords you some spare capacity should the engine need more fuel. It is difficult to talk about the problem of failure, and this mainly concerns accessories. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. 1 Wiring CLK (numbers 67 and 47): MERCEDES OM 612 DE LA [612.967] MOTOR IDENT-NR. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. The 2.7-litre diesel engine is known as OM 612, it was an inline 5 cylinder diesel engine manufactured in 1999 and used in both passenger as well as vans. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. This includes fuel injector failure, turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks. The modified OM612 was a 3.0-litre engine and produced 230 horsepower and 540 Nm of torque. Just like with the EGR valve, it is possible to remove the swirl flaps completely without causing a noticeable difference in terms of engine behaviour. 3. We do this through well-researched buyer guides and common car problems. Please use our forums if you wish to ask a tuning question, and please note we do not sell parts or services, we are just an online magazine. Here is a quick summary of the contents. This is not the coolest tolerance, but you should not neglect it. These engines have no issues reaching upwards of 300,000 miles (ca. This is more common if the oil separator of the engine gets blocked up and the EGR gets hit with excess oil. Low Power? Read more here! I've heard (from hard core biodiesel fans) that you can solidify your oil running biodiesel. Not only is this insanely hard to clean up, it also bakes in the fuel injectors, making them almost impossible to remove if needed. Going up you'll find 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited bhp and torque at a much lower level. Please drive sensibly we do not endorse reckless driving. Our advertising partners also use cookies. Adding a supercharger or additional turbo will make large torque gains, although harder to configure. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. Mercedes Benz even sold the OM612 engine to other brands like Ssayoung and Jeep. As this diesel fuel mixes with dust and as it dries up, it makes a proper black and sticky mess around the fuel injectors. Following are some of the common problems: Crankshaft position sensor Damage to the controller does not allow you to comfortably manage equipment, it is often very rich. If you're in a rush, here's a quick overview of the OM612 engine problems: Intake manifold swirl flaps problems Fuel injector washer leaks ("CDI Black Death") EGR valve problems Mass Air Flow sensor malfunctions Engine oil leaks Engine harness damage 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. As befits a Mercedes comfortable. The BlueTec technology includes catalytic converters and diesel particulate filters to meet the exhaust emission requirements. Heres more about the actual engine. When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. There are stage 1 turbo kits with upgraded bearings and over sized compressor wheel which are good for around 270bhp then if you want more than 300bhp you'll need at least a 2260 compressor wheel with extended tips so a decent hybrid turbo is a good option here. Join our forum today and benefit from over 300,000 posts on tuning Important in the description, because the capacity of the engine is less important than the type. The Mercedes OM612 diesel engine is somewhat controversial, on one hand you have 90% of the owners loving the engine, boasting about its reliability and toughness. Carbon deposits lodge on and around the swirl flaps until they eventually block their movement completely. 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. You already know how this must feel when its pulling, right? Other variants are ok. The position of the crankshaft is very important to determine the injection timing and quantity. independent specailist company and we are starting to notice serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply we normally fit secondhand low mileage engines but even these are now running in short supply so the second one of the month we are rebuilding as exchange unit is 9500 +vat mb price. Help us improve, leave a suggestion or tip. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. 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. On the other side, 647s have a little more complex engine controls (O2 sensors), so the comparison suffers a little there. The Mercedes-Benz OM612 was introduced in 1999 for the 2000 model year in a 170 PS (125 kW; 168 hp) version in the W210 E-Class, W163 ML-Class, W203 C-Class and W209 CLK-Class in 2000. What are the common problems in the 2.7 litres OM 612 Mercedes Benz diesel engine? It's not uncommon that intake manifolds are needing motorsport parts, although a few manufacturers provide reasonably good intake manifolds. Motorsport camshafts, push up the higher rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers. Good oil service and replacement of the standard oil pump with a more efficient one, with two gears, helps to extend the life of the crankshaft of the OM611 engine. 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. the company used the OM 612 in the following models. Replacing the engine harness is neither simple, nor is it cheap. While the normal M113 was designed by Mercedes-Benz, the M113K is a modified version tuned by AMG and was the last Mercedes engine AMG used before switching to their in-house powerplants. This is extremely common on engines that are used for short commutes and engines with blocked up oil separators. Remove your old filter and mount the new filter in the old filter's place. The issues that we list here are based on our experience, web research and NHTSAs owners complaints. Via: Mercedes-Benz. 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). Short journeys can quickly coke up these engines, which leads to carbon build up in the intake manifold and all over these plastic swirl flaps. Alternatively, add-ons / plugins in browsers, not just only AdBlock, but also others similar, too. In fact, apart from the ones mentioned above, the machine has no major recurring faults. Each rear wheel is guided by four elements. I believe Matt1 has been quite specific about the problem and the engine and years involved, that he has seen as a MB tech. Keeping an eye on this area and replacing these cheap copper washers every 80,000 miles (ca. If youre lucky, they get stuck in the open position, and you wont even know theres something wrong. Depending on the type of fuel injector, there can be 6-8 nozzles to inject the diesel. To keep us running PLEASE Donate here. Classic cars with converters have 5 or 7 gears. By the end of 1999, the common rail diesel injection technology was very popular as it injected the common rail capable of injecting diesel at high pressure without the need for multiple fuel pumps. There is also a coupe-style body called the Sportcoupe. The 2.9 L (2,874 cc) was used in the 310D and 410D Mercedes-Benz T1 and the Phase 1 Mercedes-Benz Sprinter vans (where it was modified for direct injection), the Ssangyong Musso, Korando and Rexton range and even in the 1996-1999 models of the E-class. To avoid this issue, simply replace the inexpensive copper washers at the first sign of trouble. It depends on the approach to the car. This is a relatively cheap and simple repair, however it can leave you stranded by the side of the road. 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. Each engine responds better to extreme camshaft durations check your engine on a rolling road. By the way, the V8 used later was closely related to this design. Still, that's 1.25 BILLION dollars in repairs. Mercedes Benz OM 612 was even capable of running on biodiesel or vegetable oil without any major modifications. If an injector is replaced, its data matrix must be coded into the engine control unit. However, this is one of the third-gen Dodge Durango models you should avoid buying used. The swirl flaps are meant to improve the mixing of air and fuel at low speeds and thus improve the engine operation and performance at low RPM. Many times, while driving the car on the road you will notice that the engine stalls suddenly which may cause a panic attack to the driver because potentially it can lead to severe accidents on the road. Usually the cause of the "accident" lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! JavaScript is disabled. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. Which is better, the newer V6 OM642 engine or the older l6 OM648 engine? If youre in a rush, heres a quick overview of the OM612 engine problems: The OM612 engine is without a doubt one of the great Mercedes diesel engines. Customize a car It was dubbed the C30 CDI AMG, a diesel performance car based on the C203 C-Class. Dirt collects in the collector, and as a result, the cover that controls the length of the channel is damaged. The engine is turbocharged and intercooled. "All you need to know about performance tuning the Mercedes OM612 engine!". EGR valve problems. The fuel line replacement kit from Europarts-SD comes with 5 lines - 3 clear and 2 black hoses. Here is a full breakdown. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. If you continue to use this site we will assume that you are happy with it. Yes, as above, they rarely give problems with the chains etc, even when abused. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. Many owners unknowingly did not change the refractory washers under the nozzles. Diesel Remaps While this is a highly reliable engine, it is not immune to the normal mechanic wear and tear. For a better experience, please enable JavaScript in your browser before proceeding. Several templates and tools are available to assist in formatting, such as Reflinks (documentation), reFill (documentation) and Citation bot (documentation). Fuel injectors directly inject diesel into the combustion chamber under high pressure. Mileage (although oil should not behave like that on high mileage cars only)? Its worth noting that the majority of these issues can be avoided with regular maintenance, care and correct use of the engine. Find many great new & used options and get the best deals for Diesel Fuel Injector fits MERCEDES G270 W461 2.7D 03 to 07 OM612.966 Nozzle at the best online prices at eBay! I'm not sure what the diagnosis is. Track day insurance We have a policy of actively enforcing our copyright*. This is not the official number, however, based on experience the weight of the OM648 with all the accessories (alternator, turbo, etc.) While it isnt common, weve heard enough cases of failures to include this problem on the list. Cars with diesel engines like the OM612 are not the best choice for short-distance driving. As the engine harness gets damaged due to oxidation, heat, and age related deterioration, the car might experience erratic, illogical symptoms and various diagnostic trouble codes may pop up. Why word? I advise what to choose and what to pay attention to. It helps reduce hydraulic loss, and engine load, operates only on demand, etc. I did an oil analysis to check condition and baseline the engine. 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. Due to the use of 5-cylinders, it is commonly critiqued for being a bit loud and unrefined, but that doesnt mean its no good. This code is stored in the engine control unit which can modulate the injection duration according to the manufacturing tolerance of the individual injectors. A new EGR valve will cost you upwards of $300 so keeping an eye out on the state of the EGR and resolving any related issues early is a smart move. Sign up now!!! My name is Daniel Hall, but I am more known as Daniel Word on the internet. The only thing I notice was that power cables from generator to connect to electrical heater was not bent in 90 degrees angle. 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. filed under Mercedes. However, I dont think its worth buying this model for as low as $1500-$2500. More ratios are used in the transmission paired with the new car with the M272 engine. 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. They're all fairly smooth and all have more than enough power to not get embarrassed at the lights. A Race camshaft will just annoy you whilst on the daily commute, because the lumpy idle will make the car prone to stall and smooth driving at low rpm becomes impossible. 3 trips to denver from Chicago and all highway locally too. Read more about us. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Problems with the variable intake manifold flaps. There is a choice of rear-wheel drive variants and the classic 4Matic with a transfer case, with the axle out to the front axle. The 2011 Dodge Durango is powered by a 290 horsepower 3.6-liter V6 engine. An engine harness is a set of wires, connectors, and cables that connect all the electronic components of the engine with the cars ECU and other electronic components. Mercedes Benz diesel engines are very reliable. 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. Tips for N55 Tuning, Diesel tuning The 2.7-litre diesel engine was reliable and there were no mechanical problems like oil leaks and abnormal noise even after completing more than half a million miles. Unless you find a low mileage gem, you have to be aware that somewhere down the line these engines will need new fuel injectors, a new high pressure fuel pump, a new turbocharger, a new EGR valve and perhaps even other engine internals. 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. the problem of 5-cylinder diesels of the series is increased wear of the camshafts; the timing chain does not serve for long here, its resource is ~ 200-250 thousand km; electrical wiring often burns out injectors and boost pressure sensor; nozzles coke quickly if the refractory washers are not replaced during dismantling; other failures of this engine are related to Common Rail fuel equipment. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. 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. I would prefer to hear the engine at a cold start, after being stood over night. Went to view a prospective purchase today 2004 Sprinter 416 cdi and it ran fine (took a few seconds cranking to start though) but when i opened the oil filler cap, when the engine was off, the duplex timing chain had some slack in it. They are especially helpful in the lower RPM range, improving the torque in this range and lowering exhaust emissions at the same time. If you are developing a track car this doesn't matter as you are in the high end of your RPM range anyway and that is where you want the power to be. Limp Mode? 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. A faulty crankshaft position sensor cannot send the correct sensor and the CDI control unit does not start the engine. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. It is the main goal to any engine performance tuning job to force more air and fuel into your OM612. View and Download Mercedes-Benz OM602 service manual online. Cookies set by third parties may be required to power functionality in conjunction with various service providers for security, analytics, performance or advertising purposes. Therefore, Mercedes Benz diesel engines are the best engines. If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. And as if that werent enough, the timing chain drive isnt very durable. short commutes experience many more difficulties. Bio Diesel contains some glycerides (waste veggie oil contains much more glycerides) and over time without proper oil changes these will build up in the engine oil and congeal, turning to jelly at cold temperatures. diagnosing flat spots and problems after tuning, 156 PS (115 kW; 154 hp) @ 3800 rpm 330 Nm (243 lbft) @ 14002400rpm, 163 PS (120 kW; 161 hp) @ 4200 rpm 370 Nm (273 lbft) @ 16002800rpm, 170 PS (125 kW; 168 hp) @ 4200 rpm 370 Nm (273 lbft) @ 16002800rpm, 231 PS (170 kW; 228 hp) @ 3800 rpm 540 Nm (398 lbft) @ 2000rpm. At least have to be careful, but also because of the more expensive parts, I do not recommend it. Page may contain affiliate links. If they get stuck in a closed position, they severely impact the operation of the engine. Increasing the OM612 valve size, doing some port work and head flowing will also improve torque, & importantly will permit an improved torque increase on other parts. Life On Four is more than just another automotive media outlet. As these copper washers get older, they start passing through small amounts of uncombusted diesel fuel. The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. The newer engine has computer control, but the fuel computer seems like it could be easily retained / heatshielded inside the engine compartment. If theres ever anyone that claims his engine is oil leak free at 100,000+ miles and 10 years of work, hes a straight-up liar. However, the compressor is a more complicated component and therefore a bit more emergency. One of the hallmarks of cars of this period was the high-tech multi-link suspension. Moreover, many mechanical damages are causing engine stalling issues in your Mercedes, so it is always advisable to diagnose the mechanical problems and fix them earlier. is around 550 lbs or 250 kilograms. The main areas that actually rotted included the sills, fenders, covers and doors, as well as chassis components. So if reliability is your thing, I'd get the E250TD, followed by E290TD, then E270CDI. The shaft can be changed separately. Manage Settings Click here to see my credentials (why you can trust me) and more information! Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines.
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