Hello,i just signed up yesterday. In the past i have found some good,information at this site,so i decided to join in.

I have owned a 75 280Z, for 31 years original owner. I try to do most all maintence and service myself now.In the past i paid a mechanic to do all service,restoration etc.

If anyone has any ideas of why a newly replaced,(rebuilt) fuel pump is squalling like a banshee.The sound inside is unbearable! Let me know your ideas. People at Courtsey Nissan,TX. said check (Dampner) Guess what its NOT there, I have no dampner! Anyway any thoughts or *fixes* will be appreciated.

You should have a dampner. The purpose of it is to dampen the pulsation in the fuel flow thats being discharged under pressure from the fuel pump. I'd get that taken care of for starters.

oh yeah, welcome to the site

Is it working properly otherwise and actually pumping fuel? Is this a stock replacement or an aftermarket pump? My guess is you got a bad one.

Ditto on the damper. Get it installed.

Well it is working,pumping fuel runs very well,the car. I believe it is a after market pump.I didnt install. I think due to the LOUD SQUALLING it is making and no dampner i will replace the pump and install dampner.

BTW, Your picture of your 73 240, I have the same type slotted mag wheels,(30 yrs. old) Where can someone get a new shinny center cap. I have bought both sizes from motorsports (2&3/4 and 3&3/16th but no fit.

Thanks for your help

B2

Thanks for your help and the welcome! Will let you know results. And when i become Digitaly unchallenged (camera) i will post some pics of my car.

B2

welcome between us man,this is a great place to share information in, I learn everyday more and more, and I fix many wrong thaughts that I had b4..

enjoy it!

Southern, My guess is that you may be suffering from the dreaded VAPOR LOCK. My '79 squeels inside the cabin, but only when it is warm outside. Cool days, no noise. If the noise is audible from the outside of the car as well, but from the engine bay, you might want to check out your idler pulleys. I only mention the pulleys because the sounds are similar from inside-both very annoying. Be thankful that you didn't have both happening simultaniously on a 12 hour drive.

One cause could be junk in the line/pre-filter. Usually a fuel pump will make noise under only three conditions:

1) Restriction up or down stream of the pump-includes being low on gas.

2) Wear in the mechanism.

3) improper voltage.

Will