high CO 83 305

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12-28-2010, 04:37 PM

lljjstrade

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high CO 83 305

I have a 1985 K5 with a 305. Took it in for smog, and failed. The high speed CO is 1.31% and is not to be higher than 1.20% Can You help?

12-29-2010, 01:43 PM

LS1K5

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Are you running a cat and what is the HC at.

12-30-2010, 02:29 AM

lljjstrade

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I got it the timing was to far advanced. Thanks, JIM

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