99WS7

iTrader: (13)

Just swaped out my walbro yesterday and the car seems to be running a little better. My fuel press is now at 62psi, where it was at 58-59. On a WOT run it will go to 56psi or so. I dont have a the hotwire kit but have been thinking a lot about it and may do it, I want this pump to last...I dont know if I had some Chinese POS pump or maybe I fucked it up in the 8k or so miles I put on it from getting it hot or something but I believe I have a REAL one now, think it says gs340 or something like that and I read those are the real ones. The one I had in before had nothing like that, just a bunch of random numbers.

chpmnsws6

iTrader: (70)

Your fine. Enjoy your walbro

LS184

iTrader: (7)

nah thats good...pray it lasts

99WS7

iTrader: (13)

let hope it does...one thing that I swear my other pump didnt is when I prime the pump the press will shoot to 60 then fall to 40 right away then just creep down to 25 and hang...wouldnt it hold the press at 60? Seems weird to me. I took the car out on a 25 mile drive and the press held fine so I hope everything is ok.

Nasty N8

iTrader: (33)

I would highly rec. the hotwire kit it will help your pump last. That pump draws alot more amps than your old pump so it is good to feed it with heavier wire.

Nate

99WS7

iTrader: (13)

I am definitely looking to do this and will be getting with you soon. So is this normal on priming the motor for the press to shoot up to 60 then fall to 25 or so psi.

chpmnsws6

iTrader: (70)

Maybe that is where the check valve finally seats? It is supposed to hold the pressure. I know my C5 wouldn't though. It went right back to 0 within a second or two.

Lonnies Performance

iTrader: (16)

58-62 at idle is normal.

An f-body should hold pressure for a while. If it drops to 0 in a minute or 2 you probably have a hose leak in the tank.

A C5 will drop pressure quickly due to the fuel transfer to the pass side venturi pump.

99WS7

iTrader: (13)

Yeah I gyess I have leak somewhere...its gota be the hose from the pump to the sending unit. I dont understand how it could be leaking though, kind of freaks me out casue if its leaking its prob gonna blow off. I need to pull the pump out again...just been so damn busy. Keep hearing this and that about the hose were supsose to run in the tanks...why the hell do we even get hose with the pump kit if its no damn good.

Right now if I prime the car it will shoot to 60ish (+ - 2) and then make its way down to 20 with in 15 seconds or so. I made sure I didnt over tighten the rubber hose or have it to loose...guess I messed up somewhere. Will check and update.

blu00rdstr

I'm running 60psi at 15in at idle, and 90psi at 15psi boost with a boost-reference fuel regulator. I do run dual pumps though.

7845

iTrader: (1)

those walboros seem to bleed off. my walboros bleed of jst as yours do. so im installing a check valve in my line

99WS7

iTrader: (13)

^ huh...never thought of that. What kind will you use since it will be in the tank? I get perfect pressure when Im driving so I guess Im ok. Still gonna pull the pump to see if something is up with the line.

blu00rdstr

I agree with the bleed off comment. The built-in checkvalves don't hold well.

The biggest cause of fuel pressure loss is a dirty fuel filter.

Old Geezer

iTrader: (3)

As long as the prime function works, and fp goes to desired pressure, what diff does it make if it drops in 3 min, 5 min, or 5 hrs??
As for the addition of a check valve.. it best be able to flow what the pump is capable of, or you've just introduced a restriction....

ZL1Killa

iTrader: (17)

if you are running on the STOCK wiring and have this new pump.... I wish you the best of luck. My stock wiring lasted about a month, then I went to start my car... and it didn't start. Looked under the car and because of the rear "block" wiring harness where the pump wiring connects to, its contact area is such a small wire, I was about to melt my block all together due to the heat it was generating