Fuel pressure question
Thread Starter
Joined: May 2003
Posts: 445
Likes: 6
From: Delco pa
Car: 85 Z28
Engine: GMPP 350 HSR
Transmission: 700R4
Axle/Gears: 4th gen 3.42 Posi LS1
Fuel pressure question
I have a HSR with the holley adjustable regulator. When my car is idling I have a constant 48 or so PSI when I rev it slightly it drops and spikes back up. After I shut the key off it will drop to 40ish within a few minutes. I know it should hold pressure with the key off. Could all this be related to the crap Holley regulator?
Joined: Jul 1999
Posts: 12,100
Likes: 127
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: Fuel pressure question
I have a HSR with the holley adjustable regulator. When my car is idling I have a constant 48 or so PSI when I rev it slightly it drops and spikes back up. After I shut the key off it will drop to 40ish within a few minutes. I know it should hold pressure with the key off. Could all this be related to the crap Holley regulator?
The throttle blip response is correct as well, vac will fall and spike and fall.
-- Joe
Thread Starter
Joined: May 2003
Posts: 445
Likes: 6
From: Delco pa
Car: 85 Z28
Engine: GMPP 350 HSR
Transmission: 700R4
Axle/Gears: 4th gen 3.42 Posi LS1
Re: Fuel pressure question
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