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Its still the pump. 4-6 lbs makes the difference. You might notice the difference at hiway speed and you hit passing gear. It wont respond as it should.. dont use a cheep pump or you will just do it over again.Or cheep pump and sell it..

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Q: 1998 Chevy v8 vortex wont start until primed fuel pressure is 57 lbs fuel filter is new runs good what now?
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