Ken Powell wrote:

Paul,
I rebuilt a 13b a couple of years ago that had a broken water seal
o-ring land in the rear end housing.  This caused combustion gases to
leak into the coolant passages.  I noticed all kinds of ugly 'gunk' in
the radiator and the coolant and assumed that it was a byproduct of the
combusion gases acting on the coolant.  A small o-ring leak could cause
all kinds of deposits over time if what I saw in the colant and radiator
really was caused by combust gasses.

Ken Powell

I don't think that was the problem as this engine was running fine
except for the idle. Other parts of the water pump are clean and like new.

Paul Lamar
 
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