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Old 09-08-2009, 10:07 PM
alia176 alia176 is offline
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Location: Tijeras, NM
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Re: Engine shuddering, only during idle - tried few things..

Quote:
Originally Posted by SoCal LS-L View Post
The video seems to indicate a good size vacuum leak, your idle seems pretty unstable. The ignitor is on the firewall, by the throttle body. I couldnt discern the ticking from the video..... it could be a spark jump from the coils, but its most likely the hydraulic lifters making the sound.
Yeah, I had a hard time recording the ticking sound with less than ideal video equipment!

The vacuum leak is a possiblity but this ticking sound seems to be moving around AND all vacuum lines and intake gaskets are brand new.

Spark jumping sound plausible that's where I'm going to look around. I'll pull the coils off and test them tomorrow if time permits. I'll check out the ignitor too.

Thanks for the info.
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