4.0 v8 Water pump question

B0Bstate · May 20, 2012

Hi everyone.I need some of your knowledge.Last week coolant started dripping out of the little hole in the water pump.so i changed the pump.now its seems to be doing it again.What would cause this.Many thanks.

discool · May 20, 2012

Faulty seal in the pump, the seal is the only thing that holds the water back.
Unless your cooling system has suddenly increased pressure and is now excessive.

Whos pump r u using ?.

B0Bstate · May 20, 2012

Cheers for the reply.Unsure of the make of the pump.However i had to change the rad last week becaue it burst.i wonder if theres too much pressure.there dosent seem to be any evidence of head gasket failure and the engine runs perfectly and dosent get hot.

discool · May 20, 2012

The vents in the expansion bottle control the pressure normally, so may be faulty u can try and clean but the best thing is just replace the cap.

You mean excessively hot I think.

West Slope Rover · May 20, 2012

The seal may have been bad and a bad seal can be made worse by over tightening the belt on the fan pulley. Any possibility that may have occurred?

Ianski · May 20, 2012

yep the hole in the bottom of pump is a tell tail hole letting you know the seal is leaking onto the bearing.take your new pump back,most units are recon im not saying there crap but not fail safe

discool · May 20, 2012

West Slope Rover said:
The seal may have been bad and a bad seal can be made worse by over tightening the belt on the fan pulley. Any possibility that may have occurred?

The tension of the serpentine belt is done automatically via an additional pully spring arangement.

vougese39 · May 20, 2012

4.0 engine issues is it a p38a engine or d2 or classic?

West Slope Rover · May 21, 2012

discool said:
The tension of the serpentine belt is done automatically via an additional pully spring arangement.

Sorry. My bad. I should stick with erudite banter and doing funny voices.

4.0 v8 Water pump question

B0Bstate

New Member

discool

Well-Known Member

B0Bstate

New Member

discool

Well-Known Member

West Slope Rover

Well-Known Member

Ianski

New Member

discool

Well-Known Member

vougese39

Well-Known Member

West Slope Rover

Well-Known Member

Similar threads