[Vwdiesel] Cracked Block?

[Gary, Orlando]

Val,
Did you replace just the pump or the whole water pump assy?

I ask because there is no water jacket between the pump itself and the
crank. The water actually flows up through part of the housing to a
point on the block just above the intermediate shaft. It seals there
with an o-ring.

Perhaps this seal is leaking or the housing has a crack.

-Gary, Orlando


On Sat, 2002-12-21 at 11:49, Val Christian wrote:
> I have a 91 Jetta 1.6, with a coolant leak in the vicinity of the water
> pump and the crankshaft.  I replaced the waterpump based upon the
> mileage it had been in there (175k miles), but found that the old
> pump appeared to be just fine.  With everything back together,
> coolant poured into the engine, comes out near the area between the
> waterpump and the crankshaft.
>
> There is no oil to coolant nor coolant to oil contamination, nor is
> there any sign of burning coolant.  The head gasket seems just fine,
> although I can't completely inspect the perimeter near the timing belt
> area.
>
> At the time I replaced the water pump, I elected to also replace the
> timing belt.  I looked for water leaks, and found none.  However, in
> retrospect, there was warpage of the lower timing belt cover.  Perhaps
> where the leak may be.
>
> Has anyone seen a block crack such as this?  Any insight or ideas to
> share?
>
>
> Thanks.
>