A quick update, my block tester arrived today.so I've started the car up and got it warm , I've carried out the test for a couple of minutes with no change in the colour of the fluid. There was foam in the header tank and so I've cleared that in case it's effecting the test (wasn't there at the start) Again carry out the test and nothing , no change. I ve then put a weight on the throttle pedal to bring the revs up to 2000 and carry out the test again, still no change in the blue fluid. The engine note did change in the middle of the last test as if it was struggling again but then it cleared and picked up again.
im hoping this means that the headgasket hasn't gone and I can start looking at other issues?
Water was clearlypumping into the header, so rules out water pump I think , when I disconnected the bottom hose from the reservoir this seemed to be empty or nothing coming up it when the engine was running.
Anybody got any more ideas or suggestions please?
kind regards
adrian roper