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1998 BMW 318 overheating

Tiny
MICWAY52
  • MEMBER
  • 1998 BMW 318
  • 4 CYL
  • 2WD
  • MANUAL
  • 78,000 MILES
Hi, my bmw has a over heating problem, first of all the heater stopped producing any heat, so I changed the thermostat, that did'nt work, I have flushed out the radiator and there's no apperent leaks anywhere, the oil is clean, when I run the engine up to temperature the water blows out of the header tank, any idea's? Thanks
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Saturday, November 7th, 2009 AT 4:34 AM

2 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Was all the air out of the system?
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Saturday, November 7th, 2009 AT 1:09 PM
Tiny
STEVEW84
  • MECHANIC
  • 673 POSTS
Sounds like you got an air pocket in the system. BMW's are a PITA to get air out. Best way that I have found is leaving the reservoir cap on with it topped off with coolant. Run the car until it gets 3/4 hot then shut it off. Open the bleeder screw to get all the steam out then top off the coolant again. Keep doing this until it gets the air out.
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Saturday, November 7th, 2009 AT 1:21 PM

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