Black junk in exhaust pipe questions.

- L
- larry
  
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posted
20 years ago

Mon, Sep 22, 2003 12:09 AM

I have an 8.1 L chev 2001 exaust pipe coated, on the inside, with carbon or something that is black. Its not caused by oil burning cause its not using any oil. I'm guessing its caused by to rich or to lean of a fuel mixture. If this is true how can I chane the fuel mix settings?

Thanks larry

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- "Doc"
  
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posted
20 years ago

Mon, Sep 22, 2003 4:50 AM

Larry,

All exhaust pipes have soot inside them. You can;'t adjust the mixture as it's controlled by the very elaborate MPFI system. If it were running rich or lean, you'd have the SES light on.

Doc

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- Scribb Abell
  
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posted
20 years ago

Tue, Sep 23, 2003 2:30 PM

I'm guessing its caused by to rich or to lean of a fuel mixture.

If this is true how can I chane the fuel mix settings?

Thanks larry ............................. (the Doctor writes.......)

Larry, All exhaust pipes have soot inside them. You can;'t adjust the mixture as it's controlled by the very elaborate MPFI system. If it were running rich or lean, you'd have the SES light on.

Doc ....................

ditto.........

and get you a good tune-up if you haven't done it in a while.

Scrib Abell ~makeing the best of a good situation~