Anyone wanna walk me through this? Holley AFPR.
Thread Starter
Junior Member
Joined: Aug 2008
Posts: 37
Likes: 0
From: Jacksonville,FL
Anyone wanna walk me through this? Holley AFPR.
I have a walbro fuel pump and its supplying sufficient pressure to the rail however I'm at a loss when adjusting fuel pressure. I'm only getting a stable 45psi. If I turn the large dial either way I"ll "MAYBE" see a -1 or +1 jump in fuel pressure. I believe I'm suppose to remove the vacuum hose supplying the AFPR? Obviously I capped it off. I've tried both with removal and installed and have yet to achieve any spike in difference. I know the rubber diaprahm is good and it isnt leaking. Any ideas? I'm trying to get it to 51psi and run 12 BTDC. Some have done this with similiar setup and have seen 2 1/10 decrease in 1/4 times.
Supreme Member
iTrader: (2)
Joined: Mar 2004
Posts: 1,941
Likes: 0
From: Kissimmee, FL
Car: 1991 Camaro RS
Engine: 357cid
Transmission: T5 Swap
Axle/Gears: 10bolt 7.5" 3.23 soon to be 3.73
Re: Anyone wanna walk me through this? Holley AFPR.
I have a walbro fuel pump and its supplying sufficient pressure to the rail however I'm at a loss when adjusting fuel pressure. I'm only getting a stable 45psi. If I turn the large dial either way I"ll "MAYBE" see a -1 or +1 jump in fuel pressure. I believe I'm suppose to remove the vacuum hose supplying the AFPR? Obviously I capped it off. I've tried both with removal and installed and have yet to achieve any spike in difference. I know the rubber diaprahm is good and it isnt leaking. Any ideas? I'm trying to get it to 51psi and run 12 BTDC. Some have done this with similiar setup and have seen 2 1/10 decrease in 1/4 times.
anyways with the vacuum disconnected you should be at full PSI, most AFPR are turn the screw in to raise the pressure
Joined: Feb 2002
Posts: 3,462
Likes: 4
From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: Anyone wanna walk me through this? Holley AFPR.
Adjust the fpr with the car running, uncapped, and vacuum disconnected.
Thread
Thread Starter
Forum
Replies
Last Post
RedLeader289
Tech / General Engine
10
May 28, 2019 01:47 PM
Royal_Z
Engine/Drivetrain/Suspension Parts for Sale
4
Sep 30, 2015 08:45 PM