I've got a 2001 Duramax 6.6 with 268,000 miles. Unfortunately, because âgrayâ is such a wide ⦠I am sure that it is not motor oil burning out...I drain out about every drop that I put in. White smoke from exhaust diesel engine vs. petrol engine . Is it very light black smoke? Because of this, you will often see gray and white smoke coming out from the exhaust. Black. The problem is erratic in it occurrence. Solution: Replaced Crankcase Ventilation Valve (PCV Valve/CCV Valve) and the smoke disappeared like magic! From my experience gray or white smoke means a blown head ⦠However, truly grey ⦠This issue only when starting cold seems more likely to be lack of pre heat where ever that engine has it. Water in your diesel fuel. Potential Causes of Blue-Gray or White-Gray Smoke. Grey is a pretty wide ⦠So it will lead to performance issues and a starved engine. Black smoke is caused by excess, unburned or partially combusted fuel, or conversely by inadequate air supply to your engine. ⦠Besides from being a sign of excess oil ⦠The root cause of this lean condition could be anything from a faulty fuel pump to bad glow plugs. If you're ⦠I previously had gray exhaust, but the problem was solved after the replacement. Only show this user. Water or coolant can cause white smoke from a diesel engine as well. Consequently, a proper running diesel engine should produce no visible smoke from the exhaust. It appears that the oil is being burned by the engine because of the smoke in the exhaust. Pro-Tip: Blue smoke during acceleration means your vehicleâs piston rings may be damaged. Or maybe an injector or two issue not atomising quite right. Worn valve guides or seals â They can be letting oil pass through to the cylinder.Cylinder wear â A worn cylinder will allow enough space for the oil to pass by the rings whether the rings are worn or not.Piston ring wear â Again, creating a gap allowing oil to get into the combustion chamber.More items... The amount of black smoke increases as the engine accelerates. A smoky trail behind the stern is a diagnostic sign of malfunctions in one of the vehicle's systems. Contaminated diesel will also be harmful to ⦠Clean the drain back holes carefully and recheck and reassemble them. Re: Gray smoke from exhaust from 6.0 diesel. After the mending job, wait for 2 or 4 more days for the remaining oils to clean away. Black. 1. White smoke from exhaust diesel engine vs. petrol engine . Problems with the injection timing (worn timing belt) Once car is idling no more smoke (normal operation). Jan 23, 2011. sounds like injectors, too much fuel or not enough air would make it black as night, like collant entering the cylinder would ⦠Pull the egr valve out and clean it why it is out look in the intake manifold and see if it dry or dose it look wet or oily. White Smoke. What Causes Gray Exhaust Smoke? In either case the fuel-to-air ratio for ⦠In some cases, this can also be the sign of the ⦠The cylinder head is essential since it connects to the engine block and head gasket. Time to have a qualified technician check things out. White smoke pouring out of the tailpipe of a diesel-powered vehicle indicates that unburned (or partially burned) fuel is entering the exhaust. (indicating a rich air/fuel mixture) 2. From cold, my exhaust chucks out fair amounts of grey smoke for about 4 or 5 seconds, or basically until I actually start moving. This issue only when starting cold seems more likely to be lack of pre heat where ever that engine has it. Usually, either white, blue, or black smoke is mistaken as grey smoke. If there is smoke coming from the exhaust it could indicate a more serious problem with the ⦠Chosen materials and methods helped in optimizing the engine operating control parameters; Injection timing, EGR level and dieseline ratio for improved NO X, CO, HC and smoke trade-offs operating in PCCI-DI combustion mode. Dirty, sticking, or leaking injectors. I've had the fuel injectors replaced just before the 200,000 mile warranty. Red alert This is the danger zone. Diesel, gasoline and methanol fuels with quality standards were purchased locally ⦠Clean the drain back holes carefully and recheck and reassemble them. In ⦠An expert whose answer got voted for 2 times. Thinking I ⦠PD300 Skoda Fabia. The oil level is low between oil changes. If the valve guideâs seals or piston rings are worn out, the oil will leak into the combustion chamber which in turn will burn. ... Grey Smoke. Contributor. Bluish-tinted white smoke? Water in your diesel can cause improper combustion and thus white smoke to be emitted from the exhaust. ... Blue or gray exhaust smoke Blue/gray exhaust smoke means there's likely an oil leak and your engine is burning oil. Tickover is clean at all times aside from this. If the white smoke is thick and long-lasting, the engine is likely burning coolant. Diesel â The white smokeâs diagnosis was coming out of the exhaust on startup for your diesel engine is due to leaking coolant or water dripping into the combustion chamber. I would notice the smell of burnt diesel while stopped at red lights during regens, which I initially ⦠Stop White Smokes From The ExhaustWinter/Cold Weather. The white smoke that appears in the exhaust pipe coming out depends on the weather too. ...Coolant Leakage. Another problem is the leakage of the coolant from the engine. ...Vaporized Fuel. White smoke can also come from vaporized fuel which is not burnt. ...Problem Caused By Acid. Sulfur is present in all oils, gas and diesel fuel. ... The oil level is low between oil changes. It happens when the truck has been running a while down the highway, pull off to a stop, go to take off again...thats where the trouble starts. Due to the fact that itâs made of ⦠And dissipates rapidly. Smoke was thick. My T4, 1991 2.4 diesel has never let me down. Despite various type of engines , the first thing which can cause blue smoke is surely the engine. Blue/gray exhaust smoke means thereâs likely an oil leak and your engine is burning oil. What causes light blue smoke from exhaust? Solution: Replaced Crankcase Ventilation Valve (PCV Valve/CCV Valve) and the smoke disappeared like magic! Gray smoke, excessive burning of oil, and slow acceleration are usually caused by a bad turbocharger. It still managed to get back over the Alps to England last week even when clouds of blue-grey smoke billowed out of the exhaust on start-up. ... Grey Smoke. Chosen materials and methods helped in optimizing the engine operating control parameters; Injection timing, EGR level and dieseline ratio for improved NO X, CO, HC and smoke trade-offs operating in PCCI-DI combustion mode. Causes of gray smoke from the exhaust pipe of a diesel engine. It is rare to see grey smoke coming out of the exhaust. This would include clogged fuel or air filters, for instance. Its done this for a long time and it hasn't really bothered me. Blue or Grey Smoke If smoke that is coloured blue or grey is coming out of your car's exhaust pipe, this generally means that your car is a little bit too thirsty on the oil. Unburnt diesel in the exhaust will show as white smoke so any of these things can cause it. Unburnt diesel in the exhaust will show as white smoke so any of these things can cause it. This usually happens when the engine is burning over ⦠The color scheme of the exhaust consists of blue, gray, red, white shades. Oil can get into the ⦠⦠In diesel cars itâs more ⦠The Causes Of, Grey Smoke From Exhaust. One way to care for your diesel engine is to ensure that you take it to a mechanic on a regular basis. ...Also make sure that you choose to use the right kind of lubricants for the engine so that all the parts work as smoothly as possible. ...Make sure you donât put in too much extra load on the engine all the time. ... I had this occur on a 2015 with ~2,500 miles on it. Your ⦠Because âgreyâ is a colour that can be interpreted differently, seeing a cloud of smoke coming out of your exhaust in that shade can mean a lot of things. Gray exhaust smoke is a bit of a mystery. smoke coming from furnace exhaust. 4. My T4, 1991 2.4 diesel has never let me down. The block generates incorrect commands to the actuators: the motor starts to smoke. Grey smoke from an exhaust. One of the main causes of black smoke from exhaust petrol is a dirty filter. Symptom: Engine uses more oil than normal, and there is some smoke from the exhaust. A cooler combustionâor one that doesn't work as efficientlyâyields less-pure forms of carbon. Running your engine to the recommended service and maintenance schedule; replacing gaskets, filters and other consumables when recommended, will significantly reduce the chances of ⦠Unless you have a really old car or a diesel engine, the smoke that is emitted is not clearly visible. You may or may not notice the engine doesn't have the same power as it used to. I was driving the other day and noticed the exhaust was blowing gray fuel smelling smoke, and it started idling rough. This would include clogged fuel or air filters, for instance. 90% of my mileage is highway. Its done this for a long time and it hasn't really bothered me. In addition to causing excess . A cooler combustionâor one that doesn't work as efficientlyâyields less-pure forms of carbon. Gray smoke from the exhaust is unburned fuel (i.e., it has been injected into a cylinder, mixed with air, but not burnt). Difference between fuel and coolant. Key findings of the results following the experiment conducted using this optimal combination includes; reduction of 68.02% NO x and 62.37% in smoke comparing with the base-line conventional diesel combustion mode. Report at a scam and speak to a recovery consultant for free. Grey smoke from exhaust mostly indicates that the engine is not efficiently burning the fuel. Devon, U.K. TDI. This smoke is caused by damp condensation inside the exhaust pipes, muffler, and catalytic converter. Black or gray exhaust smoke. Jammed or clogged turbocharger. ... Blue or gray exhaust smoke Blue/gray exhaust smoke means there's likely an oil leak and your engine is burning oil. It appears that the oil is being burned by the engine because of the smoke in the exhaust. Grey smoke from exhaust mostly indicates that the engine is not efficiently burning the fuel. Perform a cylinder compression check to isolate the cause. Bluish gray or grayish-white smoke is an indicator that your engine is burning oil. Only show this user. Once car is idling no more smoke (normal operation). One reason your car may be experiencing blue smoke coming from the exhaust could be that your engine is burning oil. What Does Grey Smoke From A Diesel Mean? GSkill â there is an easy test to figure out what liquid is causing the white smoke. When the head gasket blows on an air-cooled engine, oil could leak into the combustion chamber and when it ignites, the engine will produce black smoke. Grey is a pretty wide range. Answer (1 of 4): The three main types of smoke often seen coming from the exhaust are: 1. What does BLACK smoke from my exhaust mean? Answer (1 of 14): Combustion quality is poor. Also, oil introduction into the combustion chamber of a diesel engine can cause a runaway condition, leading to its death. This is usually caused by: Dirty or damaged fuel injectors. The Crankcase vent valve is a component located under the Intake ⦠Another common cause of the smoke on engine startup is overlapping piston rings. #1. Only show this user. Put simply, when it comes to grey smoke, diesel cars tend to emit it when they lack enough oil. It still managed to get back over the Alps to England last week even when clouds of blue-grey smoke billowed out of the exhaust on start-up. Common in cold weather, and is caused by condensation in the exhaust system. It happens when the truck has been running a while down the highway, pull off to a stop, go to take off again...thats where the trouble starts. This is especially true in modern cars. Why is it bad Anything that restricts fuel or air flow on a diesel engine can cause incomplete combustion (and hence, again, gray smoke). Fix Valve Seals. ⦠Donât let scams get away with fraud. These tend to reflect light, making the smoke look white. White. chicken stuffed with black pudding bbc good food. 2. Hazy blue/gray smoke is common during regen for the LML Sent from AutoGuide.com App "Moose" 2011 CCSB Z71 LML, tuned by nick at Duramaxtuner with EFI via SPADE, Edge Insight CTS with pyro, ranch hand front and rear bumpers, B and W turnover hitch, sprayed in bed liner. These engines generate power via internal combustion, which produces exhaust emissions, including small amounts of smoke. Hazy blue/gray smoke is common during regen for the LML Sent from AutoGuide.com App "Moose" 2011 CCSB Z71 LML, tuned by nick at Duramaxtuner with EFI via SPADE, Edge Insight CTS with pyro, ranch hand front and rear bumpers, B and W turnover hitch, sprayed in bed liner. Were you able to smell it? Problem: When starting the car gray, almost white smoke will come out of the exhaust. I previously had gray exhaust, but the problem was solved after the replacement. If the valve guideâs seals or piston rings are worn out, the oil will leak into the combustion chamber which in turn will burn. ... Grey Smoke. Answer (1 of 4): The three main types of smoke often seen coming from the exhaust are: 1. Dirty Filters. Black exhaust smoke means the engine is burning too much fuel. It is rare to see grey smoke coming out of the exhaust. One reason your car may be experiencing blue smoke coming from the exhaust could be that your engine is burning oil. Problems with the injection timing (worn timing belt) Diesel â The white smokeâs diagnosis was coming out of the exhaust on startup for your diesel engine is due to leaking coolant or water dripping into the combustion chamber. 2. Gray or black exhaust smoke in a diesel engine could be indicate several problems: Wrong grade of fuel used. White smoke can often be a sign that your car is in very bad condition. Pro-Tip: Blue smoke during acceleration means your vehicleâs piston rings may be damaged. PD300 Skoda Fabia. This is because the dirt prevents clean air from reaching the engine thus affecting the ⦠Carbon build up etc preventing ignition. So it will lead to performance issues and a starved engine. You may or may not notice the engine doesn't have the same power as it used to. 2. Despite various type of engines , the first thing which can cause blue smoke is surely the engine. A thick cloud a white smoke. Figure 1 shows schematic of experimental system. This could be caused by ⦠Blue Smoke Signals. (indicating a rich air/fuel mixture) 2. Clogged air filter. Fix Valve Seals. I have a 2008 F250 with the 6.4 and a white smoke/running problem. Potential Causes of Blue-Gray or White-Gray Smoke. Dry you are probly ok wet or oily ⦠34 Answers. Devon, U.K. TDI. While white and black smoke are related to fuel problems, blue exhaust is a sure sign that your engine is burning excessive oil. Problem: When starting the car gray, almost white smoke will come out of the exhaust. #1. Only show this user. Gray or black exhaust smoke in a diesel engine could be indicate several problems: Wrong grade of fuel used; Clogged air filter; Improper ⦠Tickover is clean at all times aside from this. I've had the fuel injectors replaced just before the 200,000 mile warranty. These tend to reflect light, making the smoke look white. Unless you have a really old car or a diesel engine, the smoke that is emitted is not clearly visible. If the oil does not leak into the combustion chamber, you will likely see oil on the cylinder and crankcase as it leaks from the head. It just started doing this, no smoke before then. This is usually caused by: Dirty or damaged fuel injectors. smoke coming from furnace exhaust. This is a symptom of a bad problem. Or maybe an injector or two issue not atomising quite right. We should pay attention to observe the normal exhaust smoke color. To tell the difference between the two is fairly easy, if your engine is making white smoke right from start up and the smoke sits on the water without disappearing youâre most likely looking at un-burned diesel. I've got a 2001 Duramax 6.6 with 268,000 miles. You Have a Coolant Leak. After the mending job, wait for 2 or 4 more days for the remaining oils to clean away. The root cause of this lean condition could be anything from a faulty fuel pump to bad glow plugs. This may occur, for instance, ⦠An excessive rate of gray smoke is seen to come out when the turbocharger is bad. This is especially true in modern cars. Like blue smoke, grey smoke could be a sign of excess oil burning somewhere in the engine, or a turbo needing attention, but there are other ⦠Figure 1 shows schematic of experimental system. Wynns Clean Burn Diesel Smoke Treatment 325mlImproves combustionIncreases performanceImproves fuel economyCombustion chambers and injector cleanerCleaner fuel for reduced black smoke emissionsSafe for use with turbochargers and catalytic converters Blue/gray exhaust smoke means thereâs likely an oil leak and your engine is burning oil. When the head gasket blows on an air-cooled engine, oil could leak into the combustion chamber and when it ignites, the engine will produce black smoke. This is especially true in modern cars. In general, a hotter fire will convert more fuel into elemental carbon, which forms into tiny particles that absorb light and appear in the sky as black smoke. Once the engine begins to heat up, the condensation evaporates and mixes with the ⦠The problem is erratic in it occurrence. White. Especially in the diesel exhaust system if there are oil leakings, surely, the grey smoke comes rapidly while accelerating. Time to have a qualified technician check things out. It ⦠And dissipates rapidly. The color scheme of the exhaust consists of blue, gray, red, white shades. Also, oil introduction into the combustion chamber of a diesel engine can cause a runaway condition, leading to its death. These engines generate power via internal combustion, which produces exhaust emissions, including small amounts of smoke. White smoke pouring out of the tailpipe of a diesel-powered vehicle indicates that unburned (or partially burned) fuel is entering the exhaust. The block generates incorrect commands to the actuators: the motor starts to smoke. Because this fuel wonât be able to burn correctly, you will notice white or grey smoke coming ⦠Unless you have a really old car or a diesel engine, the smoke that is emitted is not clearly visible. This could be occurring either because the engineâs fuel injects are faulty, or as a result of low cylinder compression. malexandro. Grey smoke from the exhaust: This could be excess oil, a PCV valve failure or a transmission fluid leak on automatic cars. Burning Through Oil and Accompanying Smoke. Symptom: Engine uses more oil than normal, and there is some smoke from the exhaust. Grey smoke coming from a diesel engine is not only ugly to look at, but it can also be dangerous. What causes light blue smoke from exhaust? However, if the injector isnât working right, the mixture might receive too much fuel. 90% of my mileage is highway. May 18, 2013. The latter issue can be put down to a problem with engine ⦠Carbon build up etc preventing ignition. What does GREY smoke from a diesel mean? I am sure that it is not motor oil burning out...I drain out about every drop that I put in. malexandro. White smoke can indicate overheating, but the âsmokeâ is actually steam thatâs produced in the exhaust system rather than as a result of an overheating engine. ⦠If there are fuel droplets in the exhaust then you can smell the exhaust and sense the odor of diesel fuel. Step 3: Look For Any Crack In The Cylinder Head. Cost Effective Maintenance has demonstrated that excessive blowby in these units can be ⦠In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn out injector. A smoky trail behind the stern is a diagnostic sign of malfunctions in one of the vehicle's systems. ⦠The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls. However, black smoke from the exhaust pipe of a gasoline engine looks ominous. Grey is a pretty wide range. Black Smoke. Clogged air filter. ⦠The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls. Evaporated Coolant, or the ethylene glycol portion of coolant, will smell sicky sweet. The Crankcase vent valve is a component located under the Intake ⦠Smoke was thick. From cold, my exhaust chucks out fair amounts of grey smoke for about 4 or 5 seconds, or basically until I actually start moving. Black exhaust smoke indicates that your combustion cylinder is only partially combusting diesel before it passes on through the system. Anyone any ideas what the problem could be? Gray smoke from the exhaust is unburned fuel (i.e., it has been injected into a cylinder, mixed with air, but not burnt). In addition, the exhaust smoke color of the diesel engine under idle speed, high speed and high load may be heavier. Published: June 7, ⦠Were you able to smell it? Gray or black exhaust smoke in a diesel engine could be indicate several problems: Wrong grade of fuel used. Apr 13, 2011. Common in cold weather, and is caused by condensation in the exhaust system. White exhaust smoke from a coolant leak is the easiest kind to diagnose because the antifreeze in coolant has a sweet smell that comes out of the tailpipe ⦠If the valve guideâs seals or piston rings are worn out, ⦠Grey smoke is unburnt fuel (raw diesel vaporising) and your blue smoke is oil which on overrun would suggest a possible valve stem oil seal problem, although normally ⦠Blowing white smoke is a red flag for your diesel engine, yet we see this happen all the time to our customers. I have a 2008 F250 with the 6.4 and a white smoke/running problem. What ⦠The amount of black smoke increases as the engine accelerates. Improper timing. To tell the difference between the two is fairly easy, if your engine is making white smoke right from start up and the smoke sits on the water without disappearing youâre most likely looking at un-burned diesel. Diesel, gasoline and methanol fuels with quality standards were purchased locally ⦠Usually, either white, blue, or black smoke is mistaken as grey smoke. If you get white, that is coolant (which smells like coolant). In general, a hotter fire will convert more fuel into elemental carbon, which forms into tiny particles that absorb light and appear in the sky as black smoke. Slightly more difficult to diagnose; grey engine smoke, can have a number of meanings. However, black smoke from the exhaust pipe of a gasoline engine looks ominous. That smoke is more grey, but some people ⦠Sometimes you will get a fuel smell, which is of course from fuel being in the exhaust. This could be caused by worn or broken piston rings, glazed or worn liners, or worn valve guides. Jul 7, 2014. Incomplete combustion is happening inside the cylinder because of 1.Your piston /cylinder bore out of shape due to prolonged wear-clearance ⦠Anything that restricts fuel or air flow on a diesel engine can cause incomplete combustion (and hence, again, gray smoke). Oil leaks are a common and ⦠Over 80% are attributable to piston ring deposits that cause the rings to bind in their grooves. Key findings of the results following the experiment conducted using this optimal combination includes; reduction of 68.02% NO x and 62.37% in smoke comparing with the base-line conventional diesel combustion mode. Burning Through Oil and Accompanying Smoke. Blue Smoke Signals. Improper timing. If the oil does not leak into the combustion chamber, you will likely see oil on the cylinder and crankcase as it leaks from the head. Anyone any ideas what the problem could be? 2. Why is it bad While white and black smoke are related to fuel problems, blue exhaust is a sure sign that your engine is burning excessive oil. Apr 13, 2011. This produces a foul burnt oil smell to all the cars behind you, and if youâre one of those cars following someone ⦠Diesel exhaust smoke may be due to a simple problem, that is causing poor combustion efficiency and costing you in excessive fuel bills (eg carboned up engine from excessive idling, stop start operation or short run times). One reason your car may be experiencing blue smoke coming from the exhaust could be that your engine is burning oil.