Quote:
Originally Posted by audiophool
Not normal. Your radiator cap has a vacuum valve in it which is designed to allow the system to return to atmospheric pressure after cooldown from a running engine. Try another cap.
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Your cap isn't venting air back in during cool down cycle...
Good luck!!
Cheers!!
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2001 E53 X5 4.4i (03-07-2001 build date) White exterior / hellbeige interior (6MT swap vehicle - Manny)
2002 E53 X5 4.6is (12-20-2001 build date) Imola Red exterior / M-texture interior (Red)
2003 E53 X5 4.4i (06-26-2003 build date) Silver exterior / Black interior (Silvester II)
2008 Mini Cooper S ragtop (04-17-2008 build date) Dark Silver exterior / Gray interior ( Topless)
BMWCCA member (#4745)
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