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Old 01-14-2008, 10:19 AM
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Re: 91 caprice classic emmision problems

Make sure the air filter is clean, you have no vacuum leaks, the injectors are both spraying properly, and the distributor is timed correctly (should be TDC or 0 degrees TDC if I remember correctly).

The CTS is the #1 culprit in a CO failure on one of these TBI cars, however.
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