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Old 03-27-2014, 03:40 PM   #7
knomadd
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Join Date: Jul 2012
Location: Rosenberg, Texas
Posts: 3,506
Re: Help! Engine troubles

I had a different problem, but still similar on mine. Turned out I was too lean on my air/fuel mixture. When you checked your plugs, were they the proper tan color? If they are white, you're too lean. Black and it's too rich.

When you adjusted your mixture screws how did you do it? If you have a vacuum gauge, hook it up to manifold vacuum and adjust your idle mixture screws until your vacuum is at the highest level. Give the gauge a few seconds to read the adjustment. Once you're satisfied with the adjustment, drive it again and see if it fixes your issue.
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1971 Chevy C10 "Brutus" SWB Fleetside 2016 6.0L (L96) 6L90E (driver/project)
1965 Pontiac GTO "Royal Goat" 400/TH400 w/AC (my baby)
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