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In gear idle ????

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Old Sep 6, 2013 | 08:16 AM
  #1  
mk's78's Avatar
mk's78
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From: Dover Delaware
Default In gear idle ????

Good morning C3 Forum Members...

Gotta a 78 stock L48 w/auto trans ?....Seems that my 78 runs quite well all things considered....choke/carb and dizzy parameters all seem to be spot on, however, I have noticed one issue and that is when I come to a complete stop there appears to be a very so slight stumble/miss as we might refer to it back in the day....Curb idle is pretty much spot on as per the decal and goes away when I accelerate and or shift into neutral......Vette would run perfect if not for that....
As usual, any and all comments, tweaks, insights etc. would be greatly appreciated..

mk's78 aka Mike
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Old Sep 6, 2013 | 10:04 AM
  #2  
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wombvette
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From: New Hill NC
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Pinch off the vacuum hose attached to the 5-8 manifold runner and watch it smooth out. Most likely vacuum leaks causing a lean condition on those cylinders.
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