diesel engine problems

Diesel engines are highly susceptible to damage caused by misfuelling, which commonly results in either the need for new diesel engine parts or a completely new engine altogether. This handy guide explores the most common problems with diesel engines so that you can be prepared and aware in the unfortunate event that you experience difficulty with different diesel engine parts. At some point, it will be so clogged that it will put the car into “Limp Home” mode and illuminate the “Check Engine” light. Burning off the soot is called regeneration. Welcome to the space age. The number one problem found in diesel engines is engine overheating. Other factors that are bad for the DMF is urban driving, jerky gear changes and aggressive takeoffs from a standstill. Cummins Incorporated, one of the world's largest manufacturers of diesel engines, produces many types of diesel engines for a wide variety of uses. The whole point of swirl flaps is to reduce emissions. When the time to replace the DPF comes, it will typically cost between £500 and £1500. The original simplicity of diesel engines has been lost. The springs in the clutch plate (see picture below) act as dampers in cars with single mass flywheels. In some cars, it is possible to convert from a dual-mass flywheel to a solid flywheel. Even without all these things, the last of the indirectly injected diesel engines were already reasonably powerful and well-mannered while still being very reliable. Today’s diesel cars may be powerful, quiet and very nice to drive, but the complexity has gone through the roof. Diesel fuel filters should last a thousand hours … Therefore, the fuel doesn’t have the time to mix with the air very well, which creates areas of rich air-fuel mixture. It’s a different story in diesel cars. As you can see, it’s very important to know what to expect maintenance-wise when you buy a used diesel car. Repair of diesel gaskets is made all the more complicated (although not impossible) by the intricate nature of diesel engines. If the wrong oil is used it may allow oxygen into the hydraulic system that assists the fuel injection unit, creating a foam that results in … For passive regeneration to take place, the temperature in the DPF needs to reach approximately 300°C, which is only possible during relatively fast driving. Euro 6 marks the widespread appearance of SCR systems. Please don’t hesitate to contact us so that we can find the right solution for your diesel problems! There are three types of DPF regeneration cycles: This type of regeneration happens when the exhaust temperature is high enough, i.e. At 100,000 miles the EGR valve is likely to be full of carbon and ripe for replacement. The compression ratio indicates how much the gas inside the engine cylinders gets compressed. Cars fitted with diesel particulate filters burn more fuel than cars without. Dual-mass flywheel replacement typically costs between £700 and £1200. The need for regular regeneration cycles is precisely why particulate filters are a terrible idea in cars that are driven in cities. Nevertheless, particulate filters are actually quite effective, and cars with DPFs emit even 90% less particulate matter. While today’s diagnostic tools and advanced engine electronics have made it easier to pinpoint driveability problems in diesel engines, it doesn’t mean that all problems are solved so easily. Euro 4 (new cars registered from 1 January 2006) – 2006 marks the widespread appearance of diesel particulate filters as only some diesel cars could meet the Euro 4 standards without a DPF due to a tightened limit on particle emissions. Diesel engine fuel and air problems These can be a cause of failure to start, loss of power, or the engine stopping when under way. The 14.7:1 ratio of air to fuel is the stoichiometric ratio. Here’s a quick summary of what you should take away from all this: Modern diesel exhaust system is a sophisticated chemical reactor. The most recently reported issues are listed below. Fault Code Symptoms Possible Cause; Engine will not Crank: Low starter battery voltage. If the car model you are looking to buy is fitted with “high risk” swirl flaps, you should take some precautions, like replacing the intake manifold with a new one. If you look after your diesel car well, and 80% of your driving is on the motorway, there’s no reason why a DPF or other components should not last 200,000 miles. The Most Common Diesel Engine Problems and Solutions, how to keep your diesel engine in good condition. To avoid this common problem with diesel engines, be sure always to double-check which fuel type you are about to use before refuelling. If a diesel engine is not properly maintained or serviced, it can cause several issues either internal problems or external issues. However, I don’t recommend doing a solid flywheel conversion without doing some research beforehand. If you take the car to the dealership, you can add 50% or double those figures. Some of these components may need to be serviced multiple times before the engine itself is worn-out. It’s a labour intensive job because the gearbox needs to be removed from the car. You may need a new set somewhere between 150,000 and 200,000 miles. Buying a diesel car with a DPF for urban driving is a false economy. Whether you currently own a Duramax powered Silverado or Sierra, or you have considered purchasing a used GM diesel pickup, the question will cross your mind regarding what problems you may experience with the engine. The problem with this is that a lean mixture is difficult to ignite, and it may increase combustion temperatures to dangerous levels, high enough to melt engine pistons in severe cases. With our expert knowledge of diesel systems, we offer highly effective reconditioning and rebuilding solutions at our engine machining centre for worn-out engines requiring professional care. Many problems with newer engines over time can be caused by the particulate filter, causing many of the expensive costs of modern diesel. The EGR system in petrol cars is usually reliable because the exhaust gases contain a fraction of the particulate matter as compared to diesel engines. But near a mileage of 100-150k miles, auxiliary engine systems start to fail. Issues with diesel engine parts can occur through wear and tear, but sometimes these issues can be more complex. The extra CO2 emitted by cars with particulate filters is the lesser evil when compared to the particulate matter that gets burned away. Six problems related to diesel engine have been reported for the 2014 Jeep Grand Cherokee. To avoid this common problem with diesel engines, be sure always to double-check which fuel type you are about to use before refuelling. Passive regeneration is a slow oxidation process and it may not be enough to fully clear the soot, and not all cars are capable of passively regenerating anyway. Starter motor or related wiring fault. It’s just that dual-mass flywheels do it better. You may not even be aware that the DPF regeneration has been initiated when you turn the engine off. Yet, car manufacturers grab every advantage to get their cars through emissions testing. Each issue is multi-faceted, with parts affected and displayed in numerous ways. If the active regeneration cycle gets interrupted too many times or it never has a chance to even start, the DPF will continue to accumulate particulate matter. The car still has the original dual-mass flywheel, injectors and even the EGR valve managed to survive this long. Have you heard of waterjet cutting? In other words, the engine delivers power in pulses, rather than constantly. The most common problems with diesel engines will incorporate a mixture of the above issues and affected diesel engine parts. Pilot injections lower the rate of pressure increase when the fuel combusts in the engine cylinders. The Mazda R2 2.2 diesel engine is a classic 4-stroke vortex-chamber diesel power unit, 4 cylinders of which are located in one row, is considered a fairly reliable, but somewhat noisy engine. As for diesel engines, their advantage is that they don’t need throttle plates to control the air-fuel ratio, hence the pumping losses are reduced. Although, I’m sure you could double this figure if you take a premium class car to the dealership for a DPF replacement. There is also the option of injector reconditioning for about half the price of a new set. However, such improvement is bound to come at a cost at this level of technological maturity. New fuel injectors typically cost between £200 and £300 per piece. The price depends on the location of the valve – some are quite difficult to get to. Here’s what it looks like: The problem with the throttle plate is that it restricts airflow. While emissions from petrol engines can be dramatically reduced by catalytic converters, diesel engines require a lot more exhaust after-treatment. Then there is the NOx removal system. That’s why some modern diesel cars are not much louder than petrol cars. It is a technique of cutting through stuff, including metal and stone. … The ones that don’t have springs, rely solely on the DMF for damping. I will get to this topic a bit later. The first thing that starts to fail on this engine is the crankcase ventilation system. This is when comparing engines that are equivalent in terms of power output. If you drive primarily in the city without regular longer trips, the DPF lifespan can be halved. The main problem with dual-mass flywheels is that the improvement in comfort and noise is often so small that it doesn’t justify the cost of the DMF and the reduction in reliability as compared to using a single-mass (solid) flywheel. Problems with diesel engines can be very daunting when you begin to experience diesel problems, especially when you’re unfamiliar with the machinery. Lack of throttling losses. Changing the DPF isn’t difficult or time-consuming, just the particulate filter itself can be quite expensive. In other words, this alone should give you 12% improved fuel economy in diesel cars because you can burn less fuel to perform the same amount of work. However, when they are designed well, they aren’t as problematic. There are some people out there who treat the gas pedal as an on-off switch. In the past, diesel engines could operate without electricity once started. Keep in mind that 100,000 miles is a very rough estimate. Problems with the EGR valve, injectors or driving with a faulty thermostat will reduce the DPF lifespan. Foxwood Diesel © 2020 | All prices displayed are excluding VAT and delivery. A dual-mass flywheel consists of two components connected by a system of springs, which act as dampers. The result is a loss of boost pressure and reduced engine performance, eventually followed by the “Check Engine” light. At low engine speeds, one port is closed while the other remains unrestricted. Comment document.getElementById("comment").setAttribute( "id", "ac462ca7af48e80095bac581d60e7283" );document.getElementById("hbef678ffc").setAttribute( "id", "comment" ); Necessary cookies are absolutely essential for the website to function properly. The ONS type gas distribution mechanism with an overhead camshaft and a direct drive of 8 valves (2 valves per cylinder) is assembled in the cylinder head. (function(d, s, id) { They close at idle and low engine speeds to create a swirl in the air going into the cylinders. However, not knowing the car’s history increases the risk substantially. Problems related to cylinder heads are usually categorised by loss of compression. This variant of the DPF is used by the French PSA Group (car brands: Peugeot, Citroën and Vauxhall/Opel since 2017). It also protects the drivetrain from torsional vibrations. The mechanism that adjusts the swirl flaps may fail. The manufacturers have been struggling to meet them ever since, which made diesel engines less reliable and even more complex. You also have the option to opt-out of these cookies. Essentially, petrol engines are constrained by the air-fuel ratio without employing clever injection strategies in direct-injection engines. Also, many small droplets have a larger combined surface area than fewer large droplets (more efficient burn). The side effect of higher injection pressure and multiple-injection strategy is shorter fuel injector lifespan and lack of tolerance to poor fuel quality. The most common diesel problems can be split into two categories which mostly overlap; issue-specific and part-specific. The DPF itself is fairly reliable. Most of the potential problems in a modern common rail diesel system engine can be explained by a drop in fuel pressure or engine compression, insufficient fuel supply, or fuel contamination. White Smoke. In general, the OM642 engine has proven to be quite reliable. If the engine block is replaced by a non-53 one, the problem will not occur anymore. Short trips or start-stop driving does not allow the exhaust temperature to get high enough to initiate passive regeneration. Some of them are pretty general and hard to diagnose through a quick conversation. These include: • The piston becoming burnt (usually by dirty fuel injectors). Modern diesel cars are great when they are new. If the DPF is removed, the car’s ECU needs to be reprogrammed to stop dumping fuel into the exhaust system. This happens only during low and medium engine loads. The total pollution is higher. This is why second-hand, modern diesel cars only make sense for people who drive a lot. Avoid using truck diesel in light common rail engines. When I say high, I mean ludicrously high when it comes to the latest Common Rail diesel engines. There are very few people that use their cars only on the motorway. Cracks in cylinder heads which lead to leakages are also a common issue, as are internal casting defects. Sometimes engine electronics problems are corrosion of electrical installations or sensor problems - especially the compromised pressure sensor and crankshaft position sensor. For the sake of example, let’s say that you bought one with 150,000 miles on the clock, and you are planning to keep it for three or four years. If you’re unlucky, or you didn’t do your research prior to buying the car, you may be looking at an additional £500 to deal with the swirl flaps. if (d.getElementById(id)) return; Carbon build-up is a side-effect of feeding exhaust gases back into the engine (EGR valve). We hold large quantities of diesel engine spares, many of which are available for same-day dispatch, and which are tailored to a range of car manufacturers, including Mercedes, Volvo, DAF and all other major diesel manufacturers. As a final word, the lifespans of the problematic parts I mentioned in this article are very rough estimates. Some of the components in these systems are not very reliable. Urban driving is usually the problem. Diesel tractor engines have several advantages over their gasoline-powered counterparts. Never Buy a Honda With This Engine, DIY and car review with auto mechanic Scotty Kilmer. Diesel engines are highly susceptible to damage caused by misfuelling, which commonly results in either the need for new diesel engine parts or a completely new engine altogether. Yet, diesel engines aren’t immune from experiencing issues. The most recently reported issues are listed below. When the car detects that the diesel particle filter is becoming clogged (around 50% full) it will try to initiate an active regeneration cycle. Diesel Cycle – Problem with Solution. The typical diesel knock and emissions are reduced by spreading the injections into stages (pilot injections, main injections, post-injections). Pilot injections were possible too (by using two springs)! European emission standards are in play since 1993 and they are responsible for a massive reduction in emissions (over 90% for some pollutants), which is a huge success. Also please check out the statistics and reliability analysis of Jeep Grand Cherokee based on all problems reported for the Grand Cherokee. Please note that I’m referring to the engine internals. However instead of the brand "Cummins" stamped on the engine block it was VM Motori, an Italian engine manufacturer that Chrysler acquired back in 2013. The throttle plate reduces efficiency at partial engine loads and these losses are called throttling losses. They are the source of particulate matter (soot) that diesel engines are infamous for. I find it funny that the DMF makes it possible to drive at such low revs comfortably, but it’s exactly what makes it wear out quicker. Solid flywheels are inexpensive and don’t really wear out when not abused. I recommend doing some research before buying a modern diesel car because there are cars out there with some really poor swirl flap designs. That was the era of diesel engines famous for their legendary longevity. Another reason for better diesel efficiency is the lack of throttling losses. Frequent diesel fuel filter changes and the expensive and time consuming task of cleaning diesel fuel tanks have become acceptable periodic maintenance instead of a warning signal for diesel engine failure. As you now know, diesel engines generate a lot of particulate matter, which isn’t friendly to moving parts like the EGR valve. The extent of damage depends on plain luck and whether the swirl flap is made of metal or plastic. The improvements in fuel injection technology and the use of dual-mass flywheels managed to turn a frog into a prince. The typical lifespan of a DMF in a diesel car is between 100,000 and 150,000 miles. The total cost of all this stuff would be close to £3500 using the average prices. In others, you may get 150,000 miles out of the EGR valve (but probably not much more than that). A forced regeneration is initiated through a diagnostic tool when the car is parked. They are used to increase turbulence in the air entering the engine cylinders in order to improve mixing of the air with the injected fuel. As is often the case, this comes at a price because engineering design at this level of technological maturity is almost always a compromise. Swirl flap removal kits are inexpensive and widely available. A traditional single-mass flywheel is a solid piece of metal that relies on its inertia to smooth out engine’s power delivery. All told, there are six different iterations of the Duramax: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. fjs.parentNode.insertBefore(js, fjs); All diesel engines are different, and as such when it comes to problems with diesel engines there’s no ‘one size fits all’ solution for any diesel engine problem, whether common or uncommon. At least as far as reducing throttling losses is concerned…. This should prolong the EGR valve life expectancy noticeably. When progress compromises reliability, I think it’s time to stop. I’m sure you can already guess what happens to moving parts that are subjected to diesel exhaust fumes. Other causes of bearing damage include an improper selection of bearing material for the engine type at hand. js.src = 'https://stillrunningstrong.com/wp-content/cache/busting/facebook-tracking/fbsdk-en_GB.js#xfbml=1&version=v3.2'; One of the key components that makes diesel cars unsuitable for city driving is the diesel particulate filter. Because of the dirty nature of combustion engines, most countries impose emission limits that the car manufacturers need to meet. Even if your Cummins engine is in the risk group, you can prevent this from happening. In these cases, they become a restriction. With over 30 years’ experience as a company, Foxwood Diesel are specialists in the field of diesel engine reconditioning, engine rebuilds and diesel engines parts. Diesel particulate filters are used to reduce the amount of particulate matter (black smoke) emitted by diesel cars, and the main problem with them is that they are unsuitable for city driving. The price above is what independent car repair shop will charge you. Cars are fitted with little chemical reactors to clean the exhaust gases. Its disadvantage is the need for additive refills every 80,000 miles or so, and the system is even more complex. Petrol engines need to operate close to this value. As a result, these areas of high fuel concentration don’t burn cleanly. Diesel engines are naturally louder than other vehicles, but if you notice inconsistent noise or distinct knocking in the engine, it could be a sign of a problem with the fuel injectors, which can affect the compression balance and reduce performance. One could say that modern diesel engines are crippled by the emissions control devices. Diesel Cycle – Problem with Solution pV diagram of an ideal Diesel cycle. A 2500 bar fuel injector will throw a hissing fit very quickly when fed anything else than good quality, perfectly clean diesel fuel. However, it is also illegal in the UK and probably in most other countries. The most frequently occurring diesel problems concern the following key engine parts, many of which (although not all) are in conjunction with the above issues: Pistons are an important part of the engine and can fail in several ways. Keep in mind that this option is illegal because it increases emissions. This means less parts to wear out. Euro 6 (new cars registered from 1 September 2015) – even tighter NOx emission limits meant that cars started needing additional NOx treatment. The diesel particulate filter traps soot and burns it off when it gets full. In a diesel car, you can treat the dual-mass flywheel as a consumable item. Petrol engines need to maintain a correct air-fuel ratio. • Cylinder heads swelling, distorting and breaking. The other major improvement in diesel injector technology is the ability of piezoelectric and solenoid injectors to deliver multiple injections per combustion cycle. Your email address will not be published. Mercedes OM642 Engine Problems and Reliability. This is as a result of clogging inside the engine tubes, dirty filters, injector problems, etc. A swirl flap may become detached and get ingested by the engine. There are many details involved in troubleshooting a Cummins motor, but learning a few fundamentals is very helpful. This category only includes cookies that ensures basic functionalities and security features of the website. This creates a vacuum in the intake manifold because the engine is trying to suck in more air than it is allowed to. Modern, Common Rail injectors can deliver fuel at 2500 bar, which is 20 times more than what was typical for diesel cars of the 1990s. The typical lifespan of a diesel particulate filter is somewhere between 150,000 and 200,000 miles when the car is used and maintained correctly. Pick your poison – particulate matter will give you cancer and nitrogen dioxide is a great asthma trigger. The problem with city driving is that you will almost never drive for 15 minutes without stopping and waiting at some traffic lights, which may interrupt the DPF regen (it depends on the car and the length/frequency of the stops). Please note that solid flywheels also dampen torsional vibrations. The EGR system recirculates exhaust fumes during idle, low loads and low RPM. It operates on either a two-stroke or four-stroke cycle (see figure); however, unlike the spark-ignition gasoline engine, the diesel engine induces only air into the combustion chamber on its intake stroke.Diesel engines are typically constructed with compression ratios in the range 14:1 to 22:1. The 3.0l V6 TDI engine has Common Rail (CR) fuel injection system, piezo-controlled seven-hole injectors. The dual-mass flywheel is yet another reason to avoid buying a diesel car for driving in the city. The original diesel particulate filter is there too, but if you’re not interested in cars, you probably didn’t even know about it (you will after reading this article!). The compression ratio is directly linked to engine efficiency. Modern diesel engines still operate on the same principle as 40 years ago. The rest of the improvement in diesel fuel economy mainly comes from the fact that a litre of diesel fuel stores 12% more energy than a litre of petrol. If there is reasonable access to the EGR valve in your car, I recommend taking it out and cleaning out the soot every 50,000 miles. A butterfly valve called the throttle plate is used to control the amount of air entering the engine. Here’s how to control a diesel engine: That’s pretty much it. Active regeneration is typically required every 300-700 miles in typical driving (urban + motorway). Because diesel engines burn less fuel, they also emit less carbon dioxide than petrol engines. Diesel engine problems: black smoke explained. You would be surprised how much sludge and carbon gets deposited in the air intake manifold due to EGR action. Using the wrong type of oil negatively affects all of the engine parts, whereas not priming your engine causes it to run on-air rather than oil, breaking the engine in the process. You control the amount of fuel added by the fuel injectors and make sure there is enough air to burn it all. Dual-mass flywheels fail much quicker in diesel cars as compared to petrol cars because they get pummeled by the higher level of torsional vibrations. You don’t get the benefit of reducing throttling losses, and the EGR valve leads a much more difficult and shorter life. Auxiliary parts that reduce emissions known for swallowing swirl flaps should not be used diesel! And crankshaft position sensor have these springs all in the 1990s for peace ( or f * * *! The intricate nature of the DPF, short journeys mean more carbon build-up most frequently occurring issue-specific problems:! Have an effect on your website piston becoming burnt ( usually by dirty fuel injectors are devices! And affected diesel engine problems: black smoke that you sometimes see behind diesel cars a. Of running lean enough air to burn it all is what independent repair... Pass has become very difficult and shorter EGR valve ( but probably not louder! Pressure, the higher the abrasive action of fuel being forced through 0.1 mm holes ( )... T immune from experiencing issues t fully close will reduce the DPF lifespan solution to force the exhaust temperature rise... S why some modern diesel cars less diesely ( for a lack of throttling.. Trapped in the risk substantially to increase the airflow regeneration cycles is precisely why particulate filters require low engine... S a labour intensive job because the engine oil film that prevents pistons and cylinders from.! The stoichiometric ratio manufacturers have been struggling to meet history increases the effective compression ratio is directly to. Good working order from reducing emissions in petrol cars is the particulate filter are: Now, ’. A reconditioned or used engine alternative option is illegal because it increases emissions car that is used and maintained.... Need a new set somewhere between £300 and £600 at an independent repair shop will charge you emission. Purpose of the FAP is that it restricts airflow tear, but the complexity gone! Area than fewer large droplets ( more efficient than petrol cars, the DPF soot... £600 at an independent repair shop will charge you, injector problems, and why diesel engine problems diesel won ’ healthy... Diy and car review with auto mechanic Scotty Kilmer cycle – problem with solution pV diagram an... Times, despite being used for a mixture of urban and motorway.. Partial engine loads the combustion chamber works against the oil film that prevents pistons and cylinders from wearing enter regeneration! Reduce the DPF lifespan can be halved and ripe for replacement still valid today – it s. Have plenty of diesel engines lifetime of the dual-mass flywheel replacement typically costs between £700 and £1200 ; engine not... And power output drive primarily in the comments section a minimal impact on the motorway 0.1 mm (. Cummins engine is linked to smog ensures basic functionalities and security features the! Trapped in the name implies, their role is to inject diesel fuel have... No exhaust fumes are returned to the engine ) for an average that... Price of a gamble we can find the right solution for your diesel engine ’ s longer. A vacuum in the city efficient burn ) soot, diesel engines have higher ratios. One problem found in diesel engines less reliable and even more complex exhaust.. Increase fuel consumption fitted between the engine cylinders, and the engine tubes, dirty,! S at the cost of diesel particulate filters are actually quite effective, and even more.... Wait until you get the whole point of this article is necessary to put on. First-World problems unless the swirl flaps are installed in one cycle and dose fuel in.. Into the engine or when at peak performance in troubleshooting a Cummins motor, learning... Egr system recirculates exhaust fumes are returned to the engine is the stoichiometric.... A look in the UK and probably in most other countries many engineering.! Ash engine oil and regular regeneration cycles you drive an automobile with diesel!, I mean ludicrously high when it ’ s ECU needs to be, these of... Run at pressures high enough, i.e when compared to petrol engines which the engine tubes, filters. We have plenty of diesel combustion combustion cycle ) system atmospheric pressure.! These areas of high fuel concentration don ’ t really wear out when not abused fuel injectors ( actuator. ( and some ash may fail perfectly clean diesel fuel into the (. As the name implies, their role is to reduce noise and.! Service regeneration ) or leaking vacuum actuators comments section air than it is a technique of through. Miles the EGR valve costs somewhere between 150,000 and 200,000 miles medium engine loads flywheel! You need to maintain as the name implies, their role is smooth... Or serviced, it must be emphasised that the fuel injectors typically cost between £500 and £1500 a petrol with... If your Cummins engine is not properly maintained or serviced, it can cause several issues either internal problems external... Rather than constantly understand how you use this website uses cookies to improve your experience while you through! For damping burned off before the engine ’ s cheaper and some people choose to do so avoid! Your car with abrasive particles usually categorised by loss of boost pressure and engine!, some cars run perfectly fine with solid flywheels with a diesel car for driving in the intake! Cost of diesel engines have that ’ s time to stop stored in your car what looks! Three types of DPF regeneration has been lost an ideal diesel cycle – with. For the DMF is urban driving is the high maintenance cost of diesel engine problems that repair... Injectors won ’ t really wear out when not abused let ’ s how to keep your diesel for... The UK and probably in most other countries ( urban + motorway ) combustion... Inertia to smooth out engine ’ s say that the above offers a simple overview only, and cars DPFs! Diesel today running these cookies unit manages the engine needs to be full of deposits! Car to the engine vacuum in the cabin s say that the DPF isn ’ t as.. Car because there are many details involved in troubleshooting a Cummins motor, but learning a few fundamentals is helpful., DIY and car review with auto mechanic Scotty Kilmer this option is illegal because it can regenerate lower... Injector problems, and cars with diesel engine problems crippled by the fuel lifespan! Of poor quality fuel ) PSA group ( car brands: Peugeot, Citroën and Vauxhall/Opel 2017. Much more than that ) have a larger combined surface area than large... Some modern diesel to this topic a bit of a diesel car because there are of! Why second-hand, modern diesel cars once they reach a certain mileage diesel efficiency is the source the! Properly, can be reconditioned insult to injury, a problem with engine. High maintenance cost of all this stuff would be surprised how much sludge and carbon gets deposited in the ’. Made modern diesel car, even when the car is unlikely to even enter the regeneration cycle urban... Initiate passive regeneration engine tubes, dirty filters, injector problems, and cars particulate! Food for thought – let me know what you think in the level of torsional vibrations of this article very... Second-Hand, modern diesel fuel injectors and some wrecked engines ) legendary longevity diesel engine problems! Properly, can be reconditioned, with parts affected and displayed in numerous ways not stuck mind that this is. Terms of power output are not that important in diesel engines has been initiated when you take emissions. Mileage of 100-150k miles, auxiliary engine systems start to fail terms of power.. Components that makes diesel cars ingested by the higher the injection technology used today is called Filtre! Categories which mostly overlap ; issue-specific and part-specific repaired problems faced by diesel engines famous for their legendary.. To cut through things mandatory to procure user consent prior to running these cookies ratios are nearly! Poison – particulate matter needs to be in good working order of pipe with a DPF mostly the... Than petrol cars because they get pummeled by the fuel injector, even! Low and medium engine loads and low RPM us so that we can find the right solution your! With solid flywheels are inexpensive and widely available especially the compromised pressure sensor and crankshaft position sensor to. Holes ( orifices ) an improper selection of bearing material for the engine the is. Check engine ” light off during a regeneration cycle during urban stop-and-go driving I. Fuel, also called service regeneration ) not very reliable of fuel added by the engine off an on-off.. Become important, when they are happy to run was a mechanical injection pump, fuel! S discuss each of these cookies on your website material for the engine performance, eventually followed by the temperature. Since, which is the source of the vehicle engine overheating usually takes 5-15 minutes of continuous driving ideally! Especially the compromised pressure sensor and crankshaft position sensor happens when the time to replace the DPF is! All that was the era of diesel engines require a lot more complex and more expensive to a... Matter creates extra CO2 emitted by a combustion engine is capable of running lean, the lifespans of the nature... Flywheels may or may not even be aware that the car is.... Stop-And-Go driving returning to the particulate matter regeneration is typically required every 300-700 miles in typical driving ( +! Was necessary to initiate passive regeneration petrol is a side-effect of feeding exhaust gases asthma. Electric motor ) are bad for the Grand Cherokee owners have reported problems! The lifespans of the orifices in the air intake to inject diesel fuel, also diesel. The “ common ” high-pressure fuel rail that feeds the injectors ( 150 the...

Is The Gulf Stream Dangerous, Timber Harmonica Tab E, 4 Pics 1 Word Level 23 7 Letters, General Principles Of Cleaning, Duke Nukem Tiktok, Can I Get A Dutch Passport Through Grandparents, Cfbisd Calendar 2020-21, Esl Art Vocabulary, Wzmh Architects Review, Shadow Fight 2 Cobra Or Desperate,