walboro 255 Questions

[kammi10]

ok so i just put one of these in my car in the tank and now when i turn the ign on to try and start it the fuel pump turns on but pulsates instead of having a constant buzz to it. if it just trying to build pressure or is there something wrong?

[s.reef]

did you upgrade your fuel pump wiring? before I put my aftermarket wiring harness on it the pump sometimes pulsated and the car would stumble

[kammi10]

yeah it has its own wire going to the fuel pump now instead of the stock wire going to it

[WMCCjames]

Mine makes all kinds of racket too at first if the car has sat for a long period of time on a low tank level. I think the fuel eventually drains back out of the line/rails and the pump cavitates when it hits the air pockets as it's filling the line/rail back up.

[kammi10]

alright ill grab a few gallons of gas to fill the tank more and then let it sit for a few

[kammi10]

well i let it sit for a few and even got the car running but it still does it..hmm

[OIF1VET]

I have an inline 255, hope the intank pump pumps more then the inline? Mine only flows enough for a 100 shot dude.. Make sure they check your fuel flow before you just put a 150 pill in.. Hate to see ya go lean!!

As far as pulsating, no issues with the inline..

[Derek]

hmm that pulsating is weird, i put a walbro in my old v6 and it hooked up right to my stock setup and ran perfect, then again thats a wholllllleee different ballgame.

[kammi10]

I have an inline 255, hope the intank pump pumps more then the inline? Mine only flows enough for a 100 shot dude.. Make sure they check your fuel flow before you just put a 150 pill in.. Hate to see ya go lean!!

As far as pulsating, no issues with the inline..

i have another pump for the nitrous

[OIF1VET]

i have another pump for the nitrous

U running 2 lines? Or a standalone?

[kammi10]

two lines.. one internal pump and an external for the nitrous

[LSxDreamer]

I have mine setup in-tank with the stock wiring for now and I have no problems.

[kammi10]

yeah idk it still starts and runs fine so hmmm.. i wonder if it has to do with my regulator cuz i can kinda hear it clicking kind of by the regulator

[WMCCjames]

You have a bypass regulator right? Mine does the same thing....makes clicking/thunking noises when it bypass fuel.

Does your pump make the pulsating noise all the time or just when you first turn on the key?

[kammi10]

it sounds like it is still doing it while the car is running too but i can;t very well hear it with open exhaust