Right then, the old pierburg is playing up
waxstat has been reset as per RJs guide and advice from elsewhere.
still no good.
with other symptoms it could be a blockage in the inlet manifold water pipe
So, what DIRECTION should the water flow ?
theu the inlet mainfold and up to the carb ?
or thru the carb and back into inlet manifold.
as per the picture, i took the pipe off and had no flow in one direction, and a trickle in the other

thanks in advance