Replaced the waterpump in my 1.9l WBX with no more than the expected
annoyances. Very proud of myself for no leaks, given it is the first
time I've worked on a watercooled VW. I still have plenty of lifting,
revving and radiator bleeding to do. When my lovely assistant returns.

BUT

a) What is the new loud clicking noise coming from my engine that
varies with engine speed?! If it was my BMW airhead motorcycle, I'd
say it was a valve out of adjustment. If it was a Subaru, I'd guess a
sticky or stuck lifter.
Given the engine got very, very hot but did NOT seize when the
waterpump seals failed, and the noise doesn't get louder, only faster
with engine speed... What should I look for? And how expensive is it
likely to be?

b) Post overheat, my O2 sensor light is on and the engine is running
very rich (judging by smell). The PO somehow damaged the O2
sensor-to-green wire connector so almost all the wires are broken on
the harness side if the connector. Do I connect the black wire to the
wires running free inside the green wire in the harness, or to the
inner green wire inside the same green insulation? Bentley offers no
clues. I believe the O2 sensor is a "generic" Bosch.

--
Bretts

1983 1.9l WBX Ivory Westfalia "Cunegonde"