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Old 12-30-2020, 08:40 PM   #12
sntrym95
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Join Date: Jan 2006
Location: Big Pine Key, FL
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Re: My 1992 GMC 1500 Winter Beater

Quote:
Originally Posted by 1970ChevC10 View Post
Onto my fuel lines - does anyone have a diagram they can share. Excluding the fill cap connections what are the 3 other ports (1) carb supply (2) return (3) charcoal canister? What is the 4th line that runs back along inside the frame?
I don't have a diagram handy but the fourth line is your rear brake line. It should go to a T above the axle on the drivers side and split to each wheel cylinder.
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