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no fuel pressure?

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Old Apr 7, 2007 | 02:25 PM
  #1  
cammed91's Avatar
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Joined: Apr 2006
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From: Tulsa, OK
Car: 1991 Pontiac Trans Am
Engine: 350 HSR, Cam, ignition, headers
Transmission: 700R4
Axle/Gears: 3.23
no fuel pressure?

i just got done rebuilding my 350 hsr, and when i go to check fuel pressure before i try to start it my gauge it reading 0 psi. i checked the fuel pump fuse by the battery and it was good, checked to make sure fuel pump was priming when i turned the key, it was. took the gauge off the schrader valve and pressed the pin to see if there was gas in the fuel rails and there was. i didn't touch the fuel pump during the rebuild and it was working when i pulled it. i can't figure out what would be causing this no fuel pressure problem. could it be the gauge? any help would be helpful.
thanks
zach
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Old Apr 7, 2007 | 02:58 PM
  #2  
transbird86's Avatar
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Joined: Apr 2006
Posts: 40
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From: ct
Car: 1986 trans am
Engine: 383 hsr
Transmission: 700r4
Axle/Gears: 3.70
Re: no fuel pressure?

check to see if fuel is coming out of your vacuum port on your regulator, your diaphram is probably ruptured
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Old Apr 7, 2007 | 03:54 PM
  #3  
cammed91's Avatar
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Posts: 136
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From: Tulsa, OK
Car: 1991 Pontiac Trans Am
Engine: 350 HSR, Cam, ignition, headers
Transmission: 700R4
Axle/Gears: 3.23
Re: no fuel pressure?

nope i just went out and checked that and it wasn't leaking at all. i actually had that happen on me before when i was running the holley adjustable and the gauge still read some pressure. i am now using the normal non adjustable holley unit. i will be getting the kirban one soon but the gauge isn't even moving at all when i turn the electric on.
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