have u checked the thermostat pal as mine runs fine untill it gets to half temp on gauge then it missfires and cuts out and wont start for nothing untill it cools down.a good mate said check my thermostat as this will cause it.so took the thermostat out and checked it and put it in boiling hotwater and it didnt open so hope it will sort mine out and maybe yours lol i ll let u know tomorrow if it fixes mine cause u might have the same problem