hi, im new to this this forum and am in desperate need of some help people.
I recently bought a 520i SE AUTO and so far have replaced the radiator, water pump, thermostat and hose pipes. I orginally thought that I had a severe air lock but I have bled the system about 4 times now.
The problem is that the pipes get hot and rock solid and have to bleed the system and pour water into the main bleed valve.
No I dont know what the problem and am even considering whether it is a possible head gasket problem, although the car does not over heat on every journey, sometimes it stay normal for a week.
Please help me as this BMW is costing me a complete fortune