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Intake manifold gasket

Tiny
HARDIEK
  • MEMBER
  • 1998 OLDSMOBILE SILHOUETTE
  • 6 CYL
  • 2WD
  • MANUAL
  • 228,000 MILES
Why does an intake manifold gasket problem cause overheating sometimes and then has no effect at all at other times? I understand it needs to be replaced, I just don't understand how it goes back to working fine sometimes. Thanks.
Tuesday, May 10th, 2011 AT 9:01 PM

3 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Are you adding anti freeze? The air pockets caused by loss of antifreeze cause overheat. But only after sufficient loss.
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Tuesday, May 10th, 2011 AT 9:18 PM
Tiny
HARDIEK
  • MEMBER
  • 3 POSTS
Sometimes. How do the air pockets form and how do they cause overheating? How do I get rid of them?
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Tuesday, May 10th, 2011 AT 10:10 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Well, ideally you replace gaskets if you know that's the cause of leaks/loss of coolant. There are lots of variables to consider when trying to predict the behavior of a coolant problem.
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Tuesday, May 10th, 2011 AT 10:47 PM

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