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Re: white smoke from exhaust
Not sure what your question is regarding but white smoke coming out of the exhaust usually means water is getting into the cylinder. If this is the case then you never know when the motor is going to go so just do whatever you need to do as quicky and cool as possible
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White smoke usually indicates low compression pressures. Do a compression test to see if the rings are worn. Check oil consumption too. If the valve stem seals are worn then the engine will use oil too.
Generally, white smoke is engine coolant burning. If it only happened for a few seconds, you may have leaked some on the exhaust pipes. I would check the engine oil and coolant levels with the engine cold, and then look for coolant leaks.
My friend, you have a good vehicle. Sediment, fuel and other fluids build up as vehicles sit. Idling your vehicle for a few minutes before driving is a smart idea. Unless it is black smoke( header oil leak) you should be okay. Just keep track of your fluid levels
If the white smoke comes out for 15 to 30 seconds your engine is ok. Condensation does build up inside the engine and as well as the exhaust and will burn out in that amount of time. If the white smoke is continuely extracted from the exhaust pipe you do have coolant leaking through the head gasket
take the inter cooler pipe of turbo and try to move the fan or bolt inside the turbo, if you can then theres a problem with the bearing probably oil starvation parts of the fan will have been sucked through the engine so this could cause the smoke problem if the plastic is stuck in the exhaust valve check all oil lines and air lines, try getting some one to hold rag over exhaust pipe and look in engine bay if you can see smoke/exhaust gases coming from turbo unit then theres a leak somewhere,
its a complicated problem and without being there i cant really help anymore than that, sorry jezza
Just had my car in the garage with horrendous white smoke coming from the exhaust. The problem with mine was a blocked crankcase breather. When blocked oil is passed into the exhaust system apparently.
Problem solved by the mechanic and half a day in the garage with the engine running to burn off the excess oil in the exhaust and the problem was solved. Had gentle ride out to the coast yesterday approx 1.5 hrs each way and the smoke has gone.
Good result for £160.00. I dread to think what the dealer would have charged.
If you low oil light is not illuminated it is ok to drive to the dealer. Putting 4 quarts in might have overfilled it leaving it to leak overboard on engine. You did not say that the smoke was coming from the tail pipe.
Is the car runnig little rough on cold start up in themorning for few seconds?? Because I have done quite a few headgaskets on QG18 Sentra aka 1.8 liter nissan sentra. here is the test. Fill up your overflow bottle to the full mark and check the coolant level in about 5 days.(drive it normally as if nothing is going on) If the level is down, your head gasket is gone. How about the check engine light , is it on?? post results.