Ducman82

broke in my engine per Gregs instructions today. being the fuel pump got nice an hot "longest the car has been on in one stretch for awhile) i forgot how loud the fuel pump gets when hot....

how loud is TO loud? im thinking of replacing with a stocker, but might upgrade to a 044 for giggles.

wanted to know how others feel out the loudness of this pump design. aggravating having such a nice car, and it sounds like a weed wacker while in traffic/lights.

the flyin' scotsman

in my experience the fuel pump got louder not long before it quit like a light switch..........after the car cooled and flat bedded home it restarted but seemed as if the pump was even louder so it was replaced......that was years ago now, problem solved.

Mrmerlin

you could always try lubing the pump add about 6 oz of MMO to the gas also try adding some techron

jcorenman

Just replace it, unless you like getting stuck somewhere ugly. It is talking to you, and it is best to listen.

There's nothing in these pumps that should be noisy, it's got to be a sign of worn rollers in the pump itself. The other failure mode is worn brushes, those don't give any warning. MMO would help lubricate the worn/ragged parts, but that's only false hope.

The pump in our 88S4 just quit, a block from the freeway onramp... Could have been a lot worse, that particular section of freeway has no shoulders or pull-out lanes.

928 at last

Duc,
Forget the 044 unless you need that level of performance, and your AC (read fuel cooler) is in fine working order....sorry no giggles available...
If you do go that way, you're going to want to go with the upgraded wiring kit (ref. Greg Brown), and an inlet kit from Tim Murphy.
And, they're just as noisy as the stock units from my experience to date.
( Just for the record, mine is a Bosch manufactured in the Czech Republic.....)

928 at last

On the lighter side of the news.....
I now have a non-leaking fuel pump (as of yesterday evening), and have achieved a new personal level of incompetence.
I actually left out a copper crush washer on the original install, and am quite surprised it took like twelve months to start leaking....!!!
All good now.

jbrob007

Rob, Your level of incompetence is nowhere NEAR mine... and Ducman can vouch for that!! At least you know what a copper crush washer is...

Duc, Go ahead and replace it cause you KNOW your gonna do it anyway... Do it... DOOOO IIIIIIIT!!!

OTR18WHEELER

It's always nice too here it when you turn the key to cycle it, but if you can here it over the engine, probably not good.

Ducman82

Replaced the pump today.... Got the pump opened up the rear cover plate and start cussing.... The PO installed the Early solid snout/check valve pump.... Luckily I was able to find the banjo capture nut down the street at the local import part shop.....

New pump, filter all seems gold so far

SeanR

Now I know why I was getting the questions I was getting today. LOL

Howz it sound?

Ducman82

Nice and quite... Like a kitty purring.....

OTR18WHEELER

looks like this is also gonna be one of my do next projects, Sunday, while on the way home from a short drive, my fuel pump started making that awful loud noise, but today, no noise. How long did it take to R&R the pump and filter, and what is approx cost on parts?

ROG100

From 928sRus
Pump $249
Filter $18.95
Plus some crush washers and maybe the hose from the pump to the tank.

Ducman82

took about 15-20 mins. 2 10mm nuts that hold on the cover, clamp the line from the tank to the pump. break loose the feed line to the engine and the filter lines, 4 10mm nuts that hold on the fuel pump and filter assembly, un do the wire to the pump, take off assembly, replace filter and pump. hand tighten the lines, install the wires, install the assembly and tighten the nuts back down. attach the hard line with new crush washers, tighten the filter lines, re attach feed hose, take of the clamp on the inlet. start car, check for leaks, re attach cover!


unless you have the in tank pump too... thats a whole different matter.