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Old 12-20-2018, 04:30 AM   #10
Synchro909
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Join Date: Jun 2014
Location: Melbourne, Australia
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Default Re: Gas Shutoff Valve

Quote:
Originally Posted by 30 Closed Cab PU View Post
You should try to confirm where it is leaking


The majority of the time a leaking carb is the float valve. When it is leaking check the very small weep hole on the bottom of the air intake, or when it is leaking feel the inside bottom of the air intake for gas - should be dry. This usually indicates float valve. When replacing the float level should be checked because if it is set to high it can cause leakage.


Then verfy that the bowl drain bolt is snugged/not leaking, check the fitting where the gas line attaches to the carb, insure the bolt that hold the two halves of the carb tighter is snug,, check where the 2 halves mate - if leaking there, there is a gasket there. Do not overtighen, you could damage things.
If the carby continues to leak, obviously BOTH the shutoff valve AND the float valve are leaking. If either were working properly, the fuel wouldn't get through.
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