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1988 Chevy Suburban head gasket?

Tiny
DEW
  • MEMBER
  • 1988 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
Hello
This is a 1988 Chev Suburban with a 5.7L motor with 90,000 original miles. The truck just started blowing white smoke from the exhaust. The oil looks perfect truck starts and runs great I am not driving it. I am looking to replace the head gasket, am I on the right track? Suggestions tips please. Thanks
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Saturday, October 16th, 2010 AT 9:49 AM

3 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Could be headgasket but first I would pull the vaccum line off of the vaccum modulator on the transmission and make sure that trans fluid is not present there due to a faulty diaphragm in the vacuum modulator. Remember trans fluid burns white too. Along with excessive moisture in the fuel
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Sunday, October 17th, 2010 AT 10:47 AM
Tiny
DEW
  • MEMBER
  • 2 POSTS
Thanks for the reply. Never heard of the transmission check will look into it. Will be checking the compression tomorrow.
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Sunday, October 17th, 2010 AT 6:19 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
That vacuum modulator makes alot of people replace head gaskets that are perfectly fine
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Sunday, October 17th, 2010 AT 6:30 PM

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