Thread: Do dying fuel pumps make this sound ? '95 Classic 3.9

Pumps definitely wear out. A new pump draws about 2/3 the amps of a worn out one (6 instead of 10+), and is much quieter. I assume worn pump surfaces resemble corrugated dirt roads. Worn pumps can also overload the plug pins on the wiring harness and melt the plastic plug housings. A new Bosch BFP772 pump is my recipe for further progress.

Oh, and don't forget the fuel filter.

PS the car doesn't hate you, it's a machine. The British designer though, he may indeed have hated home mechanics. It's your job to learn how to master the beast!

Oh yes it does... I can feeeeel the malevolence every time I turn the key...
- and just to frighten me...when I took out the dizzy and removed the two fancy screws holding the Vacuum unit, - they were less than finger-tight.

What do you think of the pick-up plate rocking ? - enough to take it a bit beyond the extremes of the gap-tolerance.
Rotor button came off, with fore-aft rocking with gentle upward pressure.
- And it's well-oiled now.l

Is that the BOSCH kit/motor that needs to be fitted into the pump contraption ?

Its due a fuel filter anyway, at 180K.

If that doesnt work, then I'll take the easy way out and call in a land rover Mobile mechanic...

Just wack on a fuel pressure gauge, that will tell you, can you hold it flat and it revs or dies?

Originally Posted by bee utey

Pumps definitely wear out. A new pump draws about 2/3 the amps of a worn out one (6 instead of 10+), and is much quieter. I assume worn pump surfaces resemble corrugated dirt roads. Worn pumps can also overload the plug pins on the wiring harness and melt the plastic plug housings. A new Bosch BFP772 pump is my recipe for further progress.

Oh, and don't forget the fuel filter.

PS the car doesn't hate you, it's a machine. The British designer though, he may indeed have hated home mechanics. It's your job to learn how to master the beast!

No prizes for guessing what the fuel filter is like inside.... -Pump did'nt stand a chance... I could barely blow anything through it...

Took it off today, (20 and 16mm spanners) and managed to salvage half inch of brown, opaque, petrol-smelling liquid. Left it outside all day to evaporate the fuel and leave mud behind, and this is the result, around 3mm of sludge in the bottom of a glass.

$22 later from Roverwhatsis in Bayswater and I reckon I've mastered the beast for now. !

Great excuse to drop the tank and fix the neck-leak at the same time.

Fuel pump will fail in sympathy now, happens a bit after a badly blocked filter

Originally Posted by rovercare

Fuel pump will fail in sympathy now, happens a bit after a badly blocked filter

Thank you... just what I wanted to hear........

My car hates me.

-Put a bit of hose from the tank outlet into a plastic bucket, turned on the IGN and let the pump run. No noise, but only a little fuel. Seems it runs for a couple of seconds then stops. Turning off/on starts the cycle again. And again... Got a glassful of brown-ish fuel in half a dozen cycles. Much clearer than what came out of the filter !!! (would'nt be difficult...) Dimly recall this as being a safety feature (low fuel system pressure with pump energised)

Tank is below 1/4, but Low Fuel Light is not on.
No time to try new filter, off to work again to make money to spend it on the Black Hole.

From my experience with a few cars (8) with electric pumps, they all blew the fuse well before they died. I pulled every one apart and on every one of them there is was a disc with notches cut in it and there was a roller in each notch. On every pump one of the rollers had worn to an oval shape, this would then twist and lock up the pump then blow the fuse. Its a bit hard to reseal the pump but at least have a look, then chuck it.