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White smoke coming out of tailpipe in 03 cadillac cts?

I recently noticed my 03 cadillac cts 3.2l was leaking oil so after researching decided to have my valve cover gaskets, upper intake, and spark plugs (because they were covered in oil) all replaced. Now there is a LOT of white smoke coming from my tailpipe. I showed the mechanic and he said it might be left over leaked oil from before, but it wasnt smoking before? i'm praying it's not a head gasket and something else expensive because I just spent a lot on previous repairs. Any help or suggestions would be appreciated. Thanks.

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SOURCE: 2003 cadillac cts - white smoke after replacing spark plugs

REMOVE VALVE COVER.REPLACE THE 4 ROUND RUBBER SEALS ON THE INSIDE VALVE COVER.

Posted on Jun 22, 2010

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With smoke coming out of tailpipe p301


White smoke coming out of the exhaust on any gas powered vehicle is a sign that you have a blown head gasket allowing water from the cooling system to enter the cylinder, and when the piston comes up for combustion stroke and fires it turns the water to steam. This is also bad for allowing coolant to get in your oil, which anti-freeze in your oil will ruin the journals (Bearings) on the crankshaft (Major Engine Repair) costing several thousand dollars *NEW* !

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It could be doing its job, sounds like what you put in tank is problem. Oil change would not cause that. I would not worry unless it keeps going after fuels runs down.

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Smoke oil? For what your thinking that is oil? Smoke coming from the tailpipe is not good news, but does not necessarily mean the engine needs rebuilding. First, you need to determine what color of smoke is coming from the tailpipe
* White smoke is caused by water and or antifreeze entering the cylinder, and the engine trying to burn it with the fuel. The white smoke is steam. There are special gaskets (head gaskets are the primary gaskets) that keep the antifreeze from entering the cylinder area.
* Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with the white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe.
* Black smoke is caused by excess fuel that has entered the cylinder area and cannot be burned completely. Another term for excess fuel is "running rich." Poor fuel mileage is also a common complaint when black smoke comes out of the tailpipe. Black smoke out the tailpipe is the least cause for alarm.


If you confirm us that is oil smoke, check and keep in mind that 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 plug, 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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it will byitself just drive it a bit. the valve cover seals or plug tubes need replacing

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Check the valve covers, oil pump or head gaskets. Just because there is no water in the oil, doesnt have anything to do with a oil leak, unless you are noticing white or blue smoke out of the exhaust

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did you run a compression check? if so and its good then you have a blockage in the water jacket
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I concur with emissionswiz; it sounds like a typical sign of a leaking of 'blown' head gasket and the white smoke could well be coolant+water.

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