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1977 Chevy Truck Carburetor air/fuel screws

150,000 MILES • V8 • 4WD • AUTOMATIC
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CARB PROBLEM
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  • 1 POST
i have a AFB carter (edelbrock) carburetor that i can not tune. i can screw the air fuel mixture screws all the way in and it still runs. it runs bad but when you do screw them all the way in it should stop the air or fuel from getting in. i dont know to much about the carb but i do know this shouldnt happen. could it be the jets or the needle valves or the screws themselves or something different that i have no idea about? i have alreeady put a new rebuild kit in it and cleaned it with carb and choke cleaner but it still does not work. did i do something wrong or did i miss something? thank you
Feb 10, 2010 at 6:34 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
It will continue to run poorly. Describe how it runs when you properly adjust the carb.

Joe
Feb 18, 2010 at 2:52 AM
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