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Exhaust

Tiny
OHFU
  • MEMBER
  • 1976 CHEVROLET CHEYENNE
  • V8
  • 2WD
  • AUTOMATIC
Exhaust manifold is leaking at the head after I replaced it. Any suggestions?
Wednesday, March 16th, 2011 AT 6:38 AM

7 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Check that there was not any excess build up of carbon on the manifold face, check for cracks in the header and that the header is not warped.
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Wednesday, March 16th, 2011 AT 6:40 AM
Tiny
OHFU
  • MEMBER
  • 7 POSTS
The header is good. But its leaking from the center set of exhaust valves. Ill check for carbon but im worried about over tightening. I think my torque wrench may be off
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Wednesday, March 16th, 2011 AT 6:50 AM
Tiny
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You can try 2 gaskets, but it does sound like a bend problem, if there is no excess carbon of any old gasket material fouling things up.
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Wednesday, March 16th, 2011 AT 6:55 AM
Tiny
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  • 7 POSTS
Will a silicone gasket seal work or should I go buy new gaskets?
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Wednesday, March 16th, 2011 AT 6:05 PM
Tiny
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Use a sealant in conjunction with a new gasket, don't rely on a sealant alone, that will just leak again.
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Wednesday, March 16th, 2011 AT 9:27 PM
Tiny
OHFU
  • MEMBER
  • 7 POSTS
Thanks for the help, the new gasket fixed the problem. There was a tear in the one I put on before. To bad I broke a radiator outlet off as soon as I finished it. If its not one thing its another. Time to buy a new radiator.
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Wednesday, March 16th, 2011 AT 10:51 PM
Tiny
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Thats a shame about the radiator, good luck with it and thank you for using 2carpros.
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Thursday, March 17th, 2011 AT 2:07 AM

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