Have put a new HG on a FL 325i, head skimmed, new WP, TB, thermostat, drive belts.
Problem is car over heated quickly on first start up - 3/4 on the gauge with an inital fill, unbled and was boiling in the hoses.
Have refilled and bled it several times and temp rises slowly to just over halfway on the gauge. Water then starts leaking from the cap (not the overflow) have replaced the cap with another 2nd hand one (2 bar)but it still leaks from the neck. Neck of reservoir does not appear to be cracked.
When its hot the bottom hose is still cold and so is the overflow. (new water pump fitted and belt tension is good) Top hoses are not and very firm (pressurized)
With the cap off there are no bubbles but the coolant (water at this stage) gets forced out as it warms. I figured this is normal in a pressurized system.
Car idles with a slight miss.
I'm going to pull the thermostat tomorrow to check it. After that will do compression test.
Any suggestions appreciated.
Problem is car over heated quickly on first start up - 3/4 on the gauge with an inital fill, unbled and was boiling in the hoses.
Have refilled and bled it several times and temp rises slowly to just over halfway on the gauge. Water then starts leaking from the cap (not the overflow) have replaced the cap with another 2nd hand one (2 bar)but it still leaks from the neck. Neck of reservoir does not appear to be cracked.
When its hot the bottom hose is still cold and so is the overflow. (new water pump fitted and belt tension is good) Top hoses are not and very firm (pressurized)
With the cap off there are no bubbles but the coolant (water at this stage) gets forced out as it warms. I figured this is normal in a pressurized system.
Car idles with a slight miss.
I'm going to pull the thermostat tomorrow to check it. After that will do compression test.
Any suggestions appreciated.
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