maxgee

iTrader: (5)

I've had this since I installed my dual walbros 2 years ago. If I prime, it goes to 55psi (used to go to 60psi) than drops quickly to 20 than bleeds off to 0 rather quickly.
Normal, not normal?


UPDATE' PROBLEM FIXED, two hose clamps where loose. No more quick drop in fuel pressure.

ledesordre

iTrader: (9)

should hold? what kind of regulator are you running?

maxgee

iTrader: (5)

Stock intank regulator.
My guess is the walbros bleed off vs stock pumps?

bridges

Running or not running pressure? are you saying that it doesnt hold pressure after shutting off, or doesnt hold pressure while running? either way, after two years there might be a split in one of the lines from the walbros, or one of the check valves on one of the pumps is bad?

maxgee

iTrader: (5)

When I turn the key to "on" it gies to 45 or so than drops down to 20 in couple of secs than down to 0 within 7 or so secs.

maxgee

iTrader: (5)

Figures I'd just pull the pump out before the Heat game and guess what I see thru the bottom of the assembly, a moth!!
You think this could drop pressure by 5psi?
I'll put it back in tomorrow. Question do u think I should cut a larger hole so the filters can lay out?

maxgee

iTrader: (5)

Anyone running e85 for awhile now with stock FPR run into this issue?

01boydws6

iTrader: (19)

I have the same issue, I am hoping my new fuel system and front mounted regulator take care of the issue

maxgee

iTrader: (5)

FIXED THE PROBLEM!!!!
2 of the hose clamps on the on each pump was loose. Tightened them up, put pump back in and Voila, turn key to on, pressure is at 50psi, holds for couple secs and drops slowly down to Zero.
I'm stoked cuz looks like this should be the issue IO was having when increasing boost to 11psi and AFR creeping up under boost on my last dyno session.