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Old 08-23-2014, 02:06 AM   #8
mattfranklin
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Join Date: Dec 2011
Location: Moraga, CA
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Re: '71 350 C10 only firing when gas dumped into carb ...

It sure sounds like a fuel issue. I'd put a 95-99% probability that it's one of the pressure or flow issues mentioned earlier.

One other thought is water in the gas. Heavy rainstorm recently? Prankster? Any significant water added will make an ethanol and water mixture fall completely out of solution in the gas. And the remaining gasoline will have a couple of points lower octane.
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