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Old 10-28-2020, 05:28 PM   #1
bobsmanstuff
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Default gas line

I have a question about my gas line on my 53 239. It seems if I let it sit for a day or two it's hard to start like the gas drains back. Would it hurt or make sense to put a one way valve in the gas like to keep it from draining back? Thanks Bob
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Old 10-28-2020, 06:10 PM   #2
Bill OH
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Default Re: gas line

You have the inlet valve in the fuel pump that should prevent the drain back to the tank. I am inclined to think that the fuel in the carb is leaking thru the power valve. The carb should retain enough gas to get the engine running and the fuel pump replenish the carb. Let the auto sit for couple of days and remove the top of the carb and see what the level of gas is. Then remove the body of the carb from its base and look for gas below the power valve.
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Old 10-28-2020, 08:15 PM   #3
tubman
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Default Re: gas line

I totally agree with Bill. leaking power valves on older Holleys has become very common since the introduction of the slightly different Holley 4 BBL power valves. They look the same and screw right in, but have a different shape where the threads meet the body that will leak every time. A lot of the 94 rebuild kits even come with the incorrect power valves. Get a proper new one from "Charlie ny" on here or maybe Daytona Parts.
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Old 10-28-2020, 08:45 PM   #4
bobsmanstuff
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Default Re: gas line

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Thanks guys. I'll check it out.
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