LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Engine stumble

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Old 03-14-2006, 06:08 PM
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Join Date: Oct 2002
Location: Dallas, georgia
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Engine stumble

I have a kind of newby question, I cannot remember what stock fuel pressure should be with a stock regulator. Shouldn't stock fuel pressure be 40-45 psi with the vacume line hooked up. I have a stumble upon a load. I think it is the filter, My pressure is 30 psi until you load the engine then it jumps to 40, but it quickly drops back down to 30. Again i think it is the filter, please help me.. Humor me.. thanks Guys..
Oh and anyone intrested in a 95 firebird a-4? 3800 ?

Thanks again
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Old 03-14-2006, 08:58 PM
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Location: High Ridge, MO
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Re: Engine stumble

The pressure should be around 41 psi with the key on and idleing. 30 psi just isn't going to cut it. Check the filter, then the pump. Good luck.
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