R33 Walbro Fuel Pump Issue

[aphexcloud]

Hi All,

i recently changed my fuel pump out for a walbro gs342 (which i found as i was doing the pump it already had one)

i changed it because i was making a strange whining noise so i thought it was dead but when i changed it to the new one it made the same noise...

but now it has gotten worse as now after i have driven the car for a while and i come to a set of lights (idle) it hunts and goes to die (taking off is a pain to till i get to 20~kph)

i have attached a clip of the sound it is making.

ps: this all started after i had the car towed cause it ruptured a fuel hose in the tank(stupid previous owner didn't know the difference between carby and efi fuel hose)

regards

aphex

r33 fuel pump.mp3

[scotty nm35]

Did you hardwire the power for the pump to the battery, through a relay? Walbro pumps don't like low voltage...

[aphexcloud]

Oh realy so should i have a relay switching a direct feed from the battery?

[scotty nm35]

Do a search, there are a few how to's on the subject. Just run the old pump wire into the relay coil to energise it. Make sure you have a fuse on the battery feed and use a good size wire.

[aphexcloud]

cheers for the advise.

I know who to do the wiring i didn't think it would need as i found a tutorial of someone just using the straight wiring so thats what i did,

but will be garbing a relay and i have some spare thick speaker wire here that should do the trick

[scotty nm35]

Let us know how you go, hardwiring has fixed the issue too many times to remember.

[KiwiRS4T]

I have had my Walbro for four about years. Hard wired it when I got the highflow making around 250awkw - for the last year or so its just been a lift pump - still going strong.

[aphexcloud]

Hi All

i did the relay a week ago now and all is fine no more strange noise now sounds and runs fine

Thank you all for your replys