Question about 1989 Chevrolet C1500

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I HAVE CONSTANT WHITE SMOKE COMING FROM THE EXHAUST WHAT CAN IT BE

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Have you checked the oil filler cap for what appears to be traces of "mayonnaise"? Are you slowly losing coolant? You may have a leaky head gasket.

Posted on Mar 28, 2011

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White smoke from exhaust is from one cause - coolant getting into the cylinder(s) from a
blown head gasket. It can't be burned, so it gets exhausted.
The good news: head gaskets don't cost too much
The bad news: a shop will charge you a pretty penny to replace yours - its labor intensive.

Posted on Mar 28, 2011

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Posted on Jan 02, 2017

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SOURCE: white smoke from exhaust in 1996 monte carlo

Head gasket failure or a crack in the cylinder head allowing engine coolant to enter the combudtion chamber, then out of the exhaust.

Posted on Jul 24, 2010

traceylewis1
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SOURCE: 86 chevy silverado, white smoke coming out exhaust

this sounds like you may have a head gasket that is leaking. you will need to have the compression on the engine checked when it is cold to see what is going on.the smoke is from coolant that has leaked into the engine and is being turned into steam and this is what you are seeing and once it warms up the leak seals off and should stop smoking

Posted on Dec 04, 2010

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SOURCE: my car has white smoke

If the white smoke comes out when the engine is warm, then you have a head gasket leaking. Give the warm exhaust a smell, if it is a sweet smell then you deffinitly have a head gasket leak. Pull the dip stick out and check to see if there is any foam/ frothing on the dip stick. This will tell you if the coolant is leaking into the oil passages and if it is, do not drive the car. The coolant will wash your rod and main bearings causing the rotating assembly to fail. The proper fix is to replace the head gasket and have the head checked for warpage. Do not use coolant system repair compounds as they will plug your heater core and now you have that to replace also. I hope this helps.

Posted on Apr 10, 2011

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