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elad226
Joined: 29 Sep 2008
Posts: 1
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| Posted: Mon Sep 29, 2008 10:12 am Post subject: Black Smoke |
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| I have an 85 Cutlass Supreme and whenever I start it up black smoke blows out the exhaust. Also when accelerating. Any suggestions? |
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88 Coupe
Joined: 15 Feb 2004
Posts: 2960
Location: Southern California
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| Posted: Mon Sep 29, 2008 12:11 pm Post subject: Re: Black Smoke |
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Hi elad226,
Welcome to TOC.
If it still has the original (Q-jet) carb, a sticking power piston is the likely cause.
Norm |
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OLD FANATIC
Joined: 17 Apr 2008
Posts: 3
Location: Massachusetts
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| Posted: Thu Oct 02, 2008 7:28 pm Post subject: Re: Black Smoke |
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| Based on mileage you may also want to consider valve stem seals. When they get worn or cracked they allow oil to leak into top of head. It is not a hard job, it does take alot of patience however. :D |
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88 Coupe
Joined: 15 Feb 2004
Posts: 2960
Location: Southern California
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| Posted: Thu Oct 02, 2008 10:36 pm Post subject: Re: Black Smoke |
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OLD FANATIC wrote: ........ they allow oil to leak into top of head ........
They allow the oil, that is already at the top of the head, to be sucked into the combustion chamber where it is burned, along with the fuel mixture.
The resulting smoke, is light blue/gray.
elad226 wrote: ........ black smoke blows out the exhaust ........
Not black.
Norm |
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