Hi i have recently changed my thermostat on my bimmer and the expansion tank and iam having big problems with the bleeding part.
I have put everything back together properly and left the bleed screw out and the filler cap off, i then topped up the tank to the level mark with coolant but cannot get any water coming out of the bleed screw which is on the top of the radiator. I also put the heater fan on just one bar and the temp on hot, after trying this i run the car but the coolant level didnt seem to drop and once the car reached half way on the temp all i got was air coming from the bleed screw still no water and the radiator pipes were empty but when temp went up they just filled with air..
Tried the process a couple of times but still the same thing, can anyone help with this please !!