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But if you spot it early, know what to do and act on it, problems can be fixed. Do not let the smoke from the exhaust is white or black. I don't drive the car hard very often as I only have a short journey to work and all in 30/40MPH speed limit, but on the occassions when I am able to push on the car always leaves a smoke/ vapour trail. After idling for 10+ sec, and when I accelerate, I see a plume of white smoke from the exhaust. Diesel engine smoke problems materialize for varying reasons. In your engine, fuel is burned in each cylinder, creating exhaust gases. If you're driving a car with an automatic transmission, make sure to inspect the oil being used by the transmission system, since a leak here could potentially be the reason for blue smoke. Engine compression. The Causes Of Grey Smoke From Exhaust. White smoke can be from unburned fuel, whether it dribbles out of an injector in the exhaust cycle etc. No smoke any other time under normal driving conditions. Chevy Cruze: White Exhaust Smoke Diagnosis. If your car or truck has a diesel engine, hereâs what the color of the exhaust smoke means. Blue exhaust smoke in a diesel vehicle could still mean oil is being burned, but it could also mean the engine oil is being atomized. This could be caused by: Gray or black exhaust smoke in a diesel engine could be indicate several problems: If white smoke is coming out your diesel carâs exhaust while the vehicle is idle during a cold start (starting the engine at the ambient temperature) and it then disappears as the car is accelerating and the engine warms up, this could be an issue with ⦠What worries me is the heavy blue smoke when I accelerate hard, funny enough this is a sort of a once off on a trip and then its gone until I shut off and restart and get going again. Un-burned fuel travels through the exhaust system & exits out the tailpipe which will produce a scent of rich, un-burnt diesel. Warm starts its fine and when ive stopped i dont see any smoke coming out. You can make a rough-and-ready diagnosis of many diesel problems by simply 'reading' the exhaust smoke (this is generalised advice for all types of diesel engines). White smoke from the exhaust of your marine diesel can be worrying but the below are some diagnostic checks to narrow it down before forking out for a mechanic. When your PCV valve was stuck open, the hard acceleration excited and heated the oil, and the higher levels of blow-by caused by high engine RPM allowed (relatively) large amounts of that oil through the valve into the intake plenum, causing the white smoke you saw. What Makes Blue Smoke From Exhaust When Accelerating? Blue smoke. I have to get a smog check in California. White smoke from the exhaust is a sign of coolant in the combustion chamber, and can be a blown head gasket or cracked head. A short puff of smoke when an engine is accelerated under load may be acceptable, due to the lag before the turbocharger speed and air flow is able to match the volume of diesel injected into the cylinders. When thereâs too much fuel in the engine that needs to burn off and be expelled, the result is thick white smoke from exhaust, which is sometimes tinted gray. Symptom: blue smoke under hard acceleration that clears after iding for a minute or two. Itâs not necessarily anything to be concerned about. Same as the other complaint, white smoke from exhaust during acceleration. Truly gray smoke is most frequently caused by burning transmission fluid. I have Audi A4 2008 B8 2.0 TDI 143 HP. Is the engine toast. If youâve ever wondered what the smoke coming from your exhaust means, then youâre not alone! i think the oil consumption did get better but was never solved now that it has been some time i bet the oil separator is full and this is where my all the smoke out of the exhaust is coming from under hard acceleration, and im only getting around 150-180 mile per tank of fuel. with diesel engines, black smoke in the exhaust can occur during hard acceleration. On a normal combustion should resulting CO and H2O. 3. White smoke often occurs when there is either too much fuel being injected into the combustion chamber, or not enough heat to burn the fuel. Hey guys, I have a 01 TDI with 300k miles on it. Then, ⦠Gray or black exhaust smoke in a diesel engine could be indicate several problems: Wrong grade of fuel used. Los Angeles, Ca. I have oil in my exhaust and oil leaking out of my EBPV. Hi, can anyone help me with an issue i have with my 1.9dci megane 120bhp. I also felt it stumble a bit then smooth out. The exhaust usually contains soot (elemental carbon), sulfates (mainly sulfuric acid), water vapor, and semi-volatile organic hydro-carbons. The next day it started fine but the lumpy start has been happening ever since it runs fine on idle after a few seconds,But this morning i looked out the back when it was running lumpy and i saw grey white smoke coming out of the exhaust which just lasted a few seconds. Slightly more difficult to diagnose; grey engine smoke can have a number of meanings. If so, it is likely that a lot of condensation had collected in the exhaust and when the accelerator pedal was pressed hard, it forced the water out of the pipe and ⦠Mazda CX-5: White Exhaust Smoke Diagnosis. A little bit of white smoke when you start the car can be the engine warming up and getting rid of condensation but a lot of smoke when the car is running can be the sign of a few problems in the car. There are a number of possible causes for blue smoke coming from your engine â and that is why weâve produced a 90-second animation to show you the most likely reasons for the problem. Does not overheat or use any coolant. The white smoke is the coolant leaking out of the engine and winding up in the oil passages, due to a bad head gasket. OTHER ITEMS TO CHECK 1. Thanks! Dilution of the oil with fuel. White smoke from the exhaust can mean many things, but one of the most common problems is when the engine is running hotter than usual. If you notice white smoke coming from your tailpipe constantly, even ⦠A month ago someone stopped my wife and said the car was really smoking from the exhaust. A: When you see a white smoke from the exhaust while accelerating, it could mean that the problem is either with the transmission fluid or a burning coolant. A diesel engine in good condition should produce no visible smoke from the exhaust, under most operating conditions. 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