Thread: Q-jet not staying on high idle
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Old 03-31-2024, 04:51 AM
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Kenth Kenth is offline
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Join Date: Feb 2003
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Did you set the idle mixture screws with engine running in gear (A/T)?
How many turns out from bottomed are the mixing screws at highest measured vacuum?
I have found that .400 pull-off is a tad too much, set closer to .250".
If the idle circuit is stock it is way too lean for todays fuels, i would open the idle tubes from .029" to .033" to start with.

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