A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

Coolant bleeding procedure not working

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Old 09-21-2009, 04:01 AM
  #11  
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unbolt coolant reservoir and lift it up so that it's higher than the heater hoses. Remove cap. You should get coolant to come out the heater hose bleeder hole even with the engine off. A helper makes this easy to do.
Old 09-21-2009, 04:37 AM
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I agree, was going to call Blau this morning before I tore into anything to talk it through with their tech. So I will try running the car with the cap on the coolant tank and see if it circulates once coming up to temp. Can you explain how to bleed the system using compressed air? This seems counter intuitive to me since it would introduce the very thing you are trying to remove??

Johnkk - thanks for the tip on raising the coolant tank up to gravity bleed. I may try that as well.
Old 09-21-2009, 06:17 AM
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Default False alarm - it's all good!

Looks like the issue was me not having the collant tank cap on which is required in order to build proper pressure - Thanks 4Driver4!!!!
I read a thread that I thought said to leave the cap off during the bleeding process, but I must have misinterpreted it. Needless to say, this makes my day a WHOLE LOT Better! On to front brakes, outer CV joints and struts & shocks replacement!
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