No fuel in return line
#1
Member
Thread Starter
Join Date: Jan 2002
Location: In a pineapple under the sea
Posts: 135
Likes: 0
Received 0 Likes
on
0 Posts
Car: `91 rs
Engine: 352 TPI
Transmission: TH700 R4
No fuel in return line
I took my return fuel hose off from the metal line to see if I was having fuel go through the rail system. I have a walbro pump that suppose to be 60psi and had my pressure regulator all the way out which means I should have fuel coming out of the return line. does that mean that the pulsator in the tank could be loose. I have a steady stream coming out the feed hose, but I dont think its at 60 psi.
Any help would be helpfull
Any help would be helpfull
#2
Junior Member
Join Date: Jun 2005
Location: SE Pa
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Car: '92 Z28
Engine: L98
Transmission: 700R4
Re: No fuel in return line
Originally posted by pandorafowler
I took my return fuel hose off from the metal line to see if I was having fuel go through the rail system. I have a walbro pump that suppose to be 60psi and had my pressure regulator all the way out which means I should have fuel coming out of the return line. does that mean that the pulsator in the tank could be loose. I have a steady stream coming out the feed hose, but I dont think its at 60 psi.
Any help would be helpfull
I took my return fuel hose off from the metal line to see if I was having fuel go through the rail system. I have a walbro pump that suppose to be 60psi and had my pressure regulator all the way out which means I should have fuel coming out of the return line. does that mean that the pulsator in the tank could be loose. I have a steady stream coming out the feed hose, but I dont think its at 60 psi.
Any help would be helpfull
Al.
#4
Moderator
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 164 Likes
on
119 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
I would think that if the Fuel Pressure regulator is at 60# (arbritrary number) but your pump is only putting out only 55# then I would think you may not get anything back. OR you may have a clogged line somewhere in the return...
I would think a clogged Fuel Filter would not keep the fuel from returning, as that is on the feed side... However I guess if there was a large enough fuel pressure drop at the filter it may not be able to keep up.
Where are you checking the return fuel at? If your back by the fuel tank the Emissions canister tube should have no fuel. Check your FP regulator to see if it does not have something broken inside as it may not let fuel return if something got stuck in the return hole.
John
I would think a clogged Fuel Filter would not keep the fuel from returning, as that is on the feed side... However I guess if there was a large enough fuel pressure drop at the filter it may not be able to keep up.
Where are you checking the return fuel at? If your back by the fuel tank the Emissions canister tube should have no fuel. Check your FP regulator to see if it does not have something broken inside as it may not let fuel return if something got stuck in the return hole.
John
#6
Member
Thread Starter
Join Date: Jan 2002
Location: In a pineapple under the sea
Posts: 135
Likes: 0
Received 0 Likes
on
0 Posts
Car: `91 rs
Engine: 352 TPI
Transmission: TH700 R4
I disconnected the return hose inside the engine bay and had the pimer connector jumpered. the pump should be pushing 60psi and the afpr was all the way out( afpr mod )
Thread
Thread Starter
Forum
Replies
Last Post
AkDrifted
Engine/Drivetrain/Suspension Parts for Sale
6
08-17-2015 07:45 PM