Forced Induction Custom FI Setup Questions

low fuel pressure

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Old Nov 13, 2007 | 07:53 PM
  #1  
zccr-xsi's Avatar
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Default low fuel pressure

well i just finshed putting in my walbro 255 pump.and when i start it up it has really low pressure lik 30 psi low.and when i try to drive it it seems to choke out really bad.and sounds like a real lowe rev limit.im throwing no codes(chipped pm6) i know i didnt kink a line putting in the tank,but i didnt change the pump sock i washed it out really really good then let it dry for few days and installed it with the walbro.anyone have any clue on what clould cause this?
Old Nov 13, 2007 | 08:11 PM
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southwest2118's Avatar
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Default Re: low fuel pressure

bad pump?.....restriction somewhere
Old Nov 13, 2007 | 08:17 PM
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zccr-xsi's Avatar
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Default Re: low fuel pressure

well if it was a bad pump it wouldnt pump nuttin up to the motor,and it wouldnt bzz when i turn the key.i check most of the rubber lines they arent kink or bent to create a problem.
Old Nov 13, 2007 | 08:36 PM
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Default Re: low fuel pressure

pull the pump out and check everything
Old Nov 13, 2007 | 08:41 PM
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zccr-xsi's Avatar
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Default Re: low fuel pressure

i dont know if u know but its in a crx and ill have to drop the tank again.
Old Nov 13, 2007 | 08:43 PM
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Default Re: low fuel pressure

Originally Posted by zccr-xsi
i dont know if u know but its in a crx and ill have to drop the tank again.
if its too much work just sell it :P
Old Nov 16, 2007 | 03:38 PM
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Darkelvis's Avatar
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Default Re: low fuel pressure

Originally Posted by zccr-xsi
well if it was a bad pump it wouldnt pump nuttin up to the motor,and it wouldnt bzz when i turn the key.i check most of the rubber lines they arent kink or bent to create a problem.
Not true at all, a bad pump doesn't necessarily just die off, some times they will just slowly take a ----.

Now, looking at this logically lets think...car runs good, put in new fuel pump, now car runs bad. I WONDER WHAT THE ------- PROBLEM IS Either bad pump, bad install, it's something either you did or a bad pump. Pull the ****** out.
Old Nov 16, 2007 | 03:41 PM
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Default Re: low fuel pressure

You have enough gas. Walbro pumps like 1/2 tanks+
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