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Old 08-27-2016, 10:55 AM   #1
gmc396
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Join Date: Aug 2013
Location: Ephraim, WI
Posts: 48
Idle Mixture Screws Leaking

I've got a '68 GMC C2500 with a 396 and Rochester GMV carb and 4-speed. I was fine tuning the idle mixture screws and noticed some gas on the intake manifold after I drove the truck. It looks like the idle mixture screws are leaking a bit. Is there a small donut gasket in the hole where the mixture screws go? Any suggestions on how to stop the leak? I finally got the truck set up and would rather not pull the carb. Thanks for your help.
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