I tend to wonder about anything ACCEL....
Fuel Pressure Gone Crazy
Thread Starter
Racer
Joined: Jul 2004
Posts: 389
Likes: 2
From: Howard Beach, NY
Fuel Pressure Gone Crazy
I hooked a fuel pressure gauge up to my rail and the fuel pressure jumps very rapidly from 30-50psi at idle with the vacuum line off the regulator.
The gauge is brand new and the car is running like crap, sputtering and stuff
Any ideas? It's a stock pump w/ Accell AFPR
The gauge is brand new and the car is running like crap, sputtering and stuff
Any ideas? It's a stock pump w/ Accell AFPR
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
If the pulsater in the tank is bad(oval disc shaped peice that is attached in the line of the pump assembly) that will cause the jumping in the gauge.
Last edited by mseven; Mar 8, 2007 at 04:13 PM.
Thread Starter
Racer
Joined: Jul 2004
Posts: 389
Likes: 2
From: Howard Beach, NY
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
No the pulsator/dampener is located above the fuel pump on the assembly. It can easily be replaced with a short hose and clamps. What does the fuel pressure do when you shut the engine off?
I would also wonder about the Accel AFPR.
I would also wonder about the Accel AFPR.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Right, it is part of the assembly, I don't think I would attributte that to the cause of sputtering. Usually the only issue when those are bad is that it becomes a guess as to where the pressure is exactly set, so if it is jumping between 30-50 maybe 40psi.??
Thread Starter
Racer
Joined: Jul 2004
Posts: 389
Likes: 2
From: Howard Beach, NY
I was thinking the same thing.. I might swap out a spare stock FPR i have on my other lt-1 manifold and see what happens. i wonder where i can get the gaskets...
Thread Starter
Racer
Joined: Jul 2004
Posts: 389
Likes: 2
From: Howard Beach, NY
Well.... I just took out the pulsator, installed a new fuel pump, and put the stock regulator back in - fuel pressure is still jumping like crazy, from 30-50
The injectors aren't leaking, i checked them out when I had the intake off 2 months ago and i pressurized the rails with the intake off.
What else would make the fuel pressure go insane? (car is also running very rich if that helps)
The injectors aren't leaking, i checked them out when I had the intake off 2 months ago and i pressurized the rails with the intake off.
What else would make the fuel pressure go insane? (car is also running very rich if that helps)
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