Question about 2004 Nissan Maxima

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White heavy exhaust out of tailpipe when first starting after engine is off for awhile

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  • peggy_pitt Jul 31, 2009

    Thanks so much for your input.I will definitely pass it on to my mechanic who thinks it is no more than a failed PVC valve.We will see.Iwill keep you posted.Thanks again-Peggy

  • chris cogburn May 11, 2010

    Sounds like a coolant leak, which can be very serious. I would get it to a mechanic quick.

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Hi Peggy,

White smoke is indicative of water involved in the combustion process. How it got there is the question. It could be as simple as condensation or as serious as a head gasket failure.

Things to check:

  • Loss of coolant
  • Oil mixed with the coolant
  • Loss of power
The good news is that it only occurs with the engine cold. Have a compression check done on each cylinder. That will rule out a blown head gasket.

Mike

Posted on Jul 30, 2009

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Engine started and was smoking very bad but wouldn't stay started now it won't start at all but will turn over.


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hi nishga
im dave; hope i can help

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Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles. The car has many seals, gaskets, and o-rings that are designed to keep the engine oil from entering the cylinder, and one of them has failed. If too much oil leaks into the cylinder and fouls the spark plugs, it will cause a misfire(engine miss) in that cylinder, and the spark plug will have to be replaced or cleaned of the oil. Using thicker weight engine oil or an oil additive designed to reduce oil leaks might help reduce the amount of oil leaking into the cylinder.

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