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      11-12-2012, 06:10 AM   #28
khurmit
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Drives: '07 335i & '07 530d M Sport
Join Date: Mar 2011
Location: Berkshire, England

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Quote:
Originally Posted by doughboy View Post
But the cylinder head is higher than the heater rad by a long way. By that measure the head would be full of air and have melted by now?

Plenty of 335i owners have had their water pumps replaced, thus the system completely drained, and the system re-filled on a flat ramp no problems?

If the OPs started working on a tilt, under this theory that would mean the air had been expelled, so why did in stop working when put flat again?

Worth a try though......anything to get warm!
Because it wasn't vented after it started working again?!?

I'm gonna bleed it tonight - like I said, going to the local multistorey as the ramps are quite steep there. Although I do agree with you that it is strange as others haven't had this prob.