Recurring Fuel Flow Problem

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Ian
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Recurring Fuel Flow Problem

Ian
I have a 1977 CB750 that appears to be developing air bubbles in the tank that cause a vacuum which prevents fuel from flowing through the petcock. Once I remove the fuel line and bleed the tank, fuel flow is restored, but this happens often. Sometimes several times per day. Any ideas as to the root cause of this issue? Thanks.
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Re: Recurring Fuel Flow Problem

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Welcome to the forum. I would start with checking the vent in the gas cap.
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
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