Ken :
With the tap removed, stick a small screwdriver or piece of wire into the
hole, and jiggle it around. Chances are good that there are just a few
flakes of rust that are blocking the inside of the hole, which will crumble
and come out with the water.
The water circulation seems to be weakest around the #4 liner, so rust
flakes and general crud tend to accumulate around the bottom where the tap
hole is. Using a garden hose to force water in through the heater tap (and
letting it flow out through the radiator) may help too.
Randall
59 TR3A daily driver
KENNETH A. vonKLUCK wrote :
>
> Does anyone have intimate knowledge
> of the waterways in the block and a suggestion of how I
> extract the blockage with taking the engine apart?
>
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