Leaking waterpump again - help !

[tomkbucks]

Supposed to going away in the disco next weekend, on the way home tonight ( motorway for 3 miles.. ) heater stopped working - checked dash and it was starting to overheat... checked under the bonnet and the water pump is leaking (from the looks of it very slightly.. ) its been replaced twice in 2 years and this one is just 6 months old ! its leaking here , any advice ?

[tomkbucks]

after a little bit of investigating it seems (after i refilled it with water and beld it.. ) the water is infact leaking from the top pipe under the Circ clip.. hopefully just a pipe will sort it ! is there an easy way to tell the waterpump is not broken or leaking ?  if im ordering bits i dont want to order a pump if i dont need one !

[Saffy]

you do know what you have taken photo of there is not the water pump right? it's the serpentine belt tensioner.

long as gasket is intact the pump should not leak unless the bearing is starting to wear then water will start to drip from a small hole (if present on 300tdi pumps?) on the under side of fan shaft housing, that is designed as early warning that pump needs changing.

Have known a new britpart pump shear off it impeller couple miles after fitting (2.25 series engine)  :lol: so don't think it wise to fit cheap pumps to the likes of a tdi.

I imagine if you wanted to quickly test pump then remove the cable off the stop solenoid so engine doesn't start, loosen off a hose and turn over engine over briefly - water should surge out.

[tomkbucks]

yup just realsed i took loads of pictures ! it seems to be dripping off the rad top pipe so hopefully that will sort it ! have filled up with water and bled - and heat back in the cabin so looks like waterpump is ok :) phew !

[Saffy]

I think it common for the housing the top hose fits on gets pitted with corrosion and helps hose leak. I have been fitting double jubilee clips at that point to help towards maintaining a good seal.

[tomkbucks]

sounds like a good idea - new pipe ordered will do that ! arse is i cant see the waterpump to see if its leaking out of the small hole !

[lurch_917]

a trick i have used before on a badly sealing pipe is to smear some waterproof sealant round the joint betore fitting the pipe