Fuel Pumps..

[Dush]

Heyy guys... I got my mechanic that does all of my performance to supply and fit a new original Bush Fuel pump… 6 months after I have installed it, a loud buzzing sound came form the pump.. On idol it would make one sound and as soon as I step on the accelerator it would make another sound… like 2 types of buzzing sounds... A few weeks later it gave way and it the pump stopped working… then I Installed a new Walbro fuel pump with I bought of ebay… 5 days after install… it stopped working. Its an Original Walbro fuel pump… I cant here the pump prime anymore….

I dont know whats going on........... some plz help! please!!..

What should i do

This is the walbro fuel pump i bought: http://cgi.ebay.com.au/WALBRO-255-L-Hr-FUE...bayphotohosting

Edited October 9, 2007 by Dush

[nissanskyrice]

two fuel pumps in quick succession would suggest something possibly wrong with the wiring to the fuel pump. might be getting power surges or shorting or something. hope that helps.

[tacker]

did you blow any fuses ?

[Dush]

did you blow any fuses ?

Nope no Fuses blown..

I dont think their can be any thing wrong with the wiring.. its pretty stright fwd..?

[nissanskyrice]

wiring might be worn thru the insulation somewhere and arcing or something. or the terminals that connect to the fuel pump might be bad or something. of course you might just have been real unlucky and got 2 bad fuel pumps in a row.

[dmr]

didn't you get warranty with these pumps?

[Lunatikk]

I'm guessing Foreign Object Ingestion- were you running filter/s on the intake side of the pump??

Cousin of mine at one time was doing autopsies on failed Bosch fuel pumps & 90%+ of failures were caused by the pump itself sucking up crap.

[dmr]

I'm guessing Foreign Object Ingestion- were you running filter/s on the intake side of the pump??

Cousin of mine at one time was doing autopsies on failed Bosch fuel pumps & 90%+ of failures were caused by the pump itself sucking up crap.

mine sucked up crap 3 weeks ago. started making sucking/straining sounds.

it's at bosch right now, waiting for it to get back to my mechanics. fk they take their time!

do you have any ideas to stop this?

[FSTR32]

like its been said above..check wiring especially grounding wire as they can come lose quite easily if someone has fiddled with it in the past.

Happened to me the other day. grounded it properly and the pump started priming again. maybe something to do with pumps but i doubt 2 decent pumps would fail on you until they arnt installed correctly.

my 2c

[RB30-POWER]

if your curious.

the two sounds you describe is the fuel pump changing voltage, this is normal.

on idle the fuel pump control module reduces the voltage to the pump, to prevent noise and excessively heating the fuel, once you open the throttle it goes to full voltage mode, so it makes more noise.

[Dush]

Hey guy.. I donno why My bosh went But the reason why My Walbro went is coz My Mechanic Forgot to Put the Filter on the end of the fuel pump.. I had to remove my pump and have my hand in the tank for hours untill i realised that It didn't fall off.. he just forogt to put it on.. Well its either Him or his apprentice.. Anway, He Still claims that Filter is still in the tank and he wants me to drop the tank... I know for a fact its not in their and i dont want to drop the tank so I've ordered a New Walbro fuel pump ans i'm still waiting for it to come in...

Thanks for all your input guys..

[Dush]

ok... new pump in.. put their is no power going to my fuel pump..? fues and relay all good..? WTH

[RB30-POWER]

there is a fuel pump relay, and also a fuel pump fuse.

fuse supplies relay, relay supplies pump with +12v.

so if you don't have +12v at pump, check those out.

the fuel pump control module supplies a variable ground/earth to the pump to control pump speed.

so it has nothing to do with that, if its only +12 supply you need.