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1978 Chevy c 10 Pickup truck

Tiny
PBFED
  • MEMBER
  • 1978 CHEVROLET
I have a 1978 c 10 chevy pickup I'm haveing alot of blue smoke coming from the tail pipe I thought it was burning oil but I'm not sure it smells like your riding behind a bus it doesn't smell like oil. But if it is will replaceing the valve seals cure this problem.
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Tuesday, October 23rd, 2007 AT 5:39 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
What color? Black blue or white? Black= too rich fuel mixture, or choke partially closed, blue= burning oil, white= may be burning antifreeze! Head gasket?
If it's blue, and it needs valve guide seals, problem will be more pronouched on take off.
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Tuesday, October 23rd, 2007 AT 5:43 PM
Tiny
RASMATAZ
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  • 75,992 POSTS
The blue smoke is an indication of oil being burn in the combustion chamber. Probably due for an engine overhaul.

Do an engine compression/leadown test to find out where you stand at for what is really need to be rebuild.
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Tuesday, October 23rd, 2007 AT 6:01 PM

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