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Old 11-28-2012, 06:54 AM   #12
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Join Date: Sep 2012
Location: Swindon UK
Posts: 33
My Ride: E46 325Msport
Thats what I was going to say Megalocnus is right... the little pistons inside these valves have rubber seats on them that rot over the years... this happend on my E36 M3// I had no heat and though ''head gasket'' engine temp stayed ok though. I opend up the heater contol valve and it was all falling to bits and just letting cold feed water through... I basicly connected the hot feeds together and as a result pure hot air...
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