Fuel Pump

[R32Abuser]

I have had teh following problems. Firstly the pump iis a Bosch 040 in tank.

Got the pump all fitted in by my mechanic and it was all sweet for a while.

I was turning around in a fairly cambered street and came to a halt to park wen all of a sudden i hear a (to the best of my descriptions) "buzzing" or "spitting" sound coming from the fuel pump. Later that day i took the pump out checked it all out caus i thought mayb it had (the hoseclamp holding it to the cradle) fallen and was vibrating against something. There was nothing wrong, the hoseclamp was fine and everything looked how it went in wen the mechanic put it in. Took it for a drive and went fine, doesnt do it when driving in a straight line, just when i come to a stop on a hill or a cambered road. My mechanic rekns it is a vacuum leak...Anyone had any similar experiences??

[lows_13]

My silvia used to do the same thing, because i had it metal to metal

the vibrating noice was quite loud. Had the spitting sound to but it never caused any problems.

[Ronin]

Na it just the vibrating noise. When you go around a corner it must touch something and make that noise.

[R32Abuser]

one of the guys in the forced induction section reckoned it could be a grounding issue between the high and low voltages of idle and motion or something like that. And that changing this to a stronger earth such as the chassis would fix this?

This vibrating issue, im leaning more towards this other electrical issue, as it only does it when the car is stopped. Bit unsure whether this could be the problem. Did anyone ever get rid of the vibrating sound by adjusting the pump? Or by doign this electrical mod?

[Nightcrawler]

it is probably just the fuel tipping to the opposite side of the tank when you are on camber, and the pump becomes partially exposed (ie. has no fuel on it), so you can hear it louder. My 040 in-tank used to drive me crazy with buzzing in my S15 when I had less than 1/4 a tank, and on really hot days for some reason.

[platinum]

i've got an 044 mounted externally and it buzzes like anything, audiable above the exaust - doesn't seem to matter how full the tank is (although if it's running low it becomes a bit of an intermitant buzz).

[R32Abuser]

Yeha. Another guy recommended bending the outlet or inlet line to the tank or something like that. Anyone herd of this before? Dont think it could be a vacuum leak or the like? Ill try filling the tank all the way up, but what good is it running a tank full if you dont have to?