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Old 06-24-2015, 12:04 AM   #30
Old Henry
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Join Date: Oct 2010
Location: Orem, Utah
Posts: 5,762
Default Re: Bad fuel pump? 51 Custom

It has something to do with heat. When it is hot the gas will not pump even when the fuel pump and fuel lines and flex hose are all wrapped in wet towel, no matter how long I keep the engine running by drizzling gas into the carburetor. But, after it cools down, I can eventually get the gas to pump after drizzling gas into the carburetor long enough.

Any ideas? It really sounds more like vapor lock than a bad fuel pump. But, where is the vapor lock?
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