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timing light does not shoot at steady 8

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09-06-2011, 11:42 PM

vikasintl

Registered User

Join Date: Aug 2011

Location: Lakewood WA

Posts: 30

Re: timing light does not shoot at steady 8

Quote:

Originally Posted by 68C15

check for vacuum leak. IAC is attempting to bring things back to normal as well as ECM changing timing which accounts for fluctuating timing.

Someone suggested to check for pressure regulator spring and its not broken...how do I check for vacuum leak?

also how do I check for IAC? if its working properly or something wrong there?

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engine mounts, rough idle, timing, vibration

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