White smoke in the tailpipe

Tiny
DONNELL JEFFERSON
  • MEMBER
  • 1996 CADILLAC DEVILLE
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 14,300 MILES
I have the car listed above Sedan. It's not overheating but white smoke is coming out of the tailpipe.
Friday, March 25th, 2022 AT 8:14 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Hi,

White smoke usually indicates engine coolant is entering the combustion chamber and being burned by the fuel. This most commonly is the result of a faulty head gasket.

First, check the engine coolant level to determine if it is low.

If it is, take a look through this link that explains how to check for a bad head gasket:

https://www.2carpros.com/articles/head-gasket-blown-test

Also, I'm not sure where you are located, but outside temperature can cause steam from the exhaust that usually goes away after a few minutes. Could that possibly be what you are experiencing?

Let me know.

Take care,

Joe

Note: If you could record what you are seeing and upload it for me to see, I should be able to tell if it is coolant being burned.
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Friday, March 25th, 2022 AT 8:30 PM

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