[Vwdiesel] 81 Rabbit w/ a fever

[Roger Brown]

Val Christian wrote:
> I would wonder if you have a head gasket leak, which may have aggrivated
> the heater core leak by overpressurizing the system.
> 
> As you do the repairs, I would look for any cyl head problems.
> There are chem test kits which look for combustion by products.
> When I've had a problem it has been obvious, and I've had overheat
> problems.
> 
> Val

You can also try putting a pressure gauge on the cooling system and see if the pressure 
rises as the engine revs up.  You can also use the pressure tester to pump up the cooling 
system to help try and find where the leak is, if it only shows up under pressure.

Water pump replacement writeup:
	http://www.4crawler.com/Diesel/CheapTricks/index.shtml#WaterPumpReplacement
They typically fail as the seal wears out and coolant starts leaking into the shaft area. 
  You'll find it leaking out of the weep hole on the bottom side of the water pump shaft.

-- 

   Roger