1976 buick 3.8 V-6 starts and idles fine all day. Put in drive warms up spits sputters backfire stalls. I have replace fuel pump fuel lines fuel filter, pcv valve, rplace coil, icm replaced, cleaned fuel tank. NOTHING! PLEASE HELP? Thank you

10

Asked by teddyjoe Jun 18, 2015 at 12:54 PM about the 1976 Buick Regal 2-Door Coupe

Question type: Maintenance & Repair

1 Answer

You have a bad accelerator pump. If you remove the air cleaner with engine off using a flash light. Look down the throat (venturi) move the gas pedal lever slowly and watch the gas shoot into the venturi. Should be 2 strong continuous streams without gaps or spitting. You should also do this fast with the same results. Replace cup with the new style blue ethanol safe rubber pump cup.

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