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Lv 6
On a 20 ft 1978 "RV" BB 400 2-barrel,what fuel line sizes should my Supply & Re-turn be? Someone before me ran all 1/4" supply & NO return.?
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- ?Lv 76 years ago
You don't need a fuel return line for a vehicle with a carburetor. Fuel flow is from a low pressure pump, and the carburetor floats regulate how much fuel enters the carburetor. A 1/4 inch supply line should be OK for a 400 cubic inch engine.
- Anonymous6 years ago
Someone before you did it the right way, there is no return on a carb. Especially a single 2 barrel.
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