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-   -   Need some help...I think (http://www.clubcobra.com/forums/weber-tuning/84192-need-some-help-i-think.html)

G.R. 11-29-2007 09:16 PM

Need some help...I think
 
I moved from sea level(Bainbridge Island, WA) to northern CO. My car ran great after finally getting the Webers tuned and synched in WA. After moving here I have rejetted etc. for hi-altitude....but....I can not get rid of the 2,000 to 2,500 rpm or so "popping" thru the exhaust at acceration at low idle cruising speeds between 25-35mph, when I punch it it clears up and runs great as well as running great at highway speeds.

I'm at 36* all in on my timing, I've checked float levels, jets, tubes, linkage synch, exhaust leaks, etc. . I'm at a loss now as what to do. The car runs great it's just rather embarassing to drive at low speeds.

Any ideas on what to further check?

zimmy 11-29-2007 10:20 PM

Sounds like your idle circuit is lean.

G.R. 11-29-2007 10:31 PM

So what is your suggestion for checking or correcting this? jets, tubes?timing?

68gt500 11-30-2007 03:47 AM

Yes, it sounds like you are running a touch lean on the idle circuit.

First thing I would try is opening up the idle mixture screws, an aditional 1/4 - 1/2 turn.

If you feel an improvement, then IŽll go a step richer on the idle jet, or decrease the idle jet holder size.


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