Car is finally registered but I am experiencing some over heating issues which I am at a bit of a loss, checked the water pump while there was wear the impeller vanes where about 11mm tapering to about 8mm. the alloy plate had some corrosion about 2mm deep.
The engine galleries are clear and radiator has been refurbished. I have flushed the system but when at idle the water does not appear to move and then suddenly expands to overflow which indicates a vapour shield??on the head???
I have removed the thermostat and blocked off the by pass as a temporary measure until the modifications are done for the thermostat…? could this be the issue??
Any hints would be appreciated