The V8 Owners Forum -

Range Rover 1986 V8 efi, I have had the entire engine stripped, re-faced, chemical cleaned, and most parts changed.
(TAPPETS, BEARINGS,CHAIN,& COGS,OIL PUMP SPROCKETS,CAM SHAFT,PISTON RINGS,CORE PLUGS,HOSES,WATER PUMP,BELTS THE WHOLE DAMN LOT!!!)
Now the engine is back together and running, I've got a leak from the water pump, from the discharge excess water hole on the front of the pump.
As we doubted this was right, We've sent it back as defective, but the same thing occurs with the second pump(BRITPART pumps).
The hoses are not ROCK solid, so there is no real pressure build up.
The engine turns over like new!
Can't seem to work out what's wrong.
Any suggestions please?
Thanks all.
Colin

Defective water pump.

Chris.

Thanks for that response, YES we believe that the second pump could be defective, but as the importer reckons "IT'S IMPOSSIBLE 2 OUTTA 2" pumps being defective, we have our Doubts obviously!
Only thing is: how many pumps we gotta go through to find out that they're all Bleedin' Useless?
Ok so it cost 50 odd quid!, but it should Work....
Thanks Again for any help.

It is unlikely that 2 out of 2 would fail, but by no means impossible.

Rangie V8 wrote:Thanks for that response, YES we believe that the second pump could be defective, but as the importer reckons "IT'S IMPOSSIBLE 2 OUTTA 2" pumps being defective, we have our Doubts obviously!
Only thing is: how many pumps we gotta go through to find out that they're all Bleedin' Useless?
Ok so it cost 50 odd quid!, but it should Work....
Thanks Again for any help.

They've sent you one out returned as faulty, but looked ok?
Wouldn't be the first time...

Would be a good reason, but I've got two pumps at the moe. so it can't be that mate!....

Only reason for water to come out of there is a failed seal. Its more than possible for a bad batch of seals and or pumps to have been made. Its poor quality control but its more than possible to happen unfortunately.

Yep, that's more or less our judgement.
The water pump is a VERY simple component.
Seeing as the hole is below the shaft, we reckon that the "O" ring seal is a crap fit.
Thus allowing liquid through.
I mean what else can there be in such a silly thing like this?
Engine turns over like a Rolex.
Just a swine that it's all gotta be dismantled and drained every blinkin' time to change the pump, just to see if we've got a defect or not!
Thanks for your reply anyway!

Rangie V8,
You say you have 2 pumps, so why not pull one apart and see if you can find a fault in the seal or assembly. You'll probably be able to buy a new seal from a pump supply place that will fit if needed.

Wish it were easy to strip the pump. I've got two old ones which are merely leaking from that hole, and SD1 EFI types are getting rare and expensive.

It's actually very normal to have two or three bad parts in a row. There is probably a whole 'bad' production run on this pump.
When this happens the best thing to do is try a totally different source to get a different batch or another manufacturers part.