coolant loss 300tdi disco

treeman · Posted: Wed Oct 26, 2016 12:24 pm Post subject: coolant loss 300tdi disco

i have severe coolant loss. dripping from front of engine, quite high up and central. any suggestions or ideas?

( Gray ) · Articulating Joined: 15 Apr 2012 Odometer: 597

I'd suspect a worn water pump bearing.

jojo · Mud Obsessed Joined: 11 Aug 2007 Odometer: 5422

Check the plastic coolant expansion tank as they have a habit of splitting on the moulding seam. If you have an original black one it is most likely knackered. Replacement ones are a whiteish colour and you an see the coolant level through them. Easy way to check the tank is to look at it with the engine reving at about 2,000 rpm as usually they don't leak on tickover.

J

kev.h · Posted: Thu Oct 27, 2016 8:51 am Post subject:

Poss "P" gasket between water pump housing and block? quite a common area for coolant loss? Worth a look from side above alternator where steel block face meets aluminium housing.

treeman · Posted: Thu Oct 27, 2016 11:51 am Post subject:

Kev H wins the prize. parts collected from rimmers this morning. rebuild due to commence.

16 RN 49 · Posted: Fri Oct 28, 2016 12:22 pm Post subject:

The P gasket is a pretty common failure. Hope you got a decent replacement, otherwise you'll be doing it again soon enough!

I've had to do it a couple of times, so I'd advise you copper-slip the bolts.