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Mud Coolent - Part 2

Discussion in 'A3/S3 Forum (8L Chassis)' started by indiemike, Feb 26, 2010.

  1. indiemike
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    indiemike ZoomZoom

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    [Feb 26, 2010]
    Right 1st of all thanks for all the info yesterday about my mud like coolent problem.

    Well today me and a mate drained the pipes, flushed them clean (alot of **** came out) and put some new coolent in. Now we have a new problem that the coolent seems to stay in the reservoir and not flow around the pipe work. Some has actually founds its way through but i think there might be some kind of air lock somewhere in the pipe work, we tried running the car and squising the pipes to help the flow but no luck. Drove the car back home over 20miles and no problems, temperature is at a constant 90c.

    Can anyone help me again lol

    Cheers in advance Mike
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  3. jonny87
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    jonny87 Active Member

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    [Feb 26, 2010]
    did you use any kind of flushing agent, ie washing machine tablets?

    do all the hoses get hot, not just the two top hoses but the hose coming off the thermostat housing should become hot all the way down once the temp hits 90, it took me ages to get the air locks out when i done mine

    also try removing the header tank totally and washing out under a tap, mine was all clogged up to fook
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  4. indiemike
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    indiemike ZoomZoom

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    [Feb 26, 2010]
    No just used water and keept running through the pipe works until they were clear, took the header tank off and got a old tooth brush and made all clean. All hoses become hot and i can feel now and then small amounts of coolent flowing through them. Not sure what to do
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  5. Imteyaz
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    Imteyaz 6th Gear

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    [Feb 26, 2010]
    I would take up jonny87's suggestion of running some washing machine tabs / coolant flush through the system to break down any 'mud' you have stuck to the walls of the pipes / radiatore core etc. Flush, repeat and run until completely clear, then when everything is back to normal, refill with distilled water and G12++ as required.
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  6. indiemike
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    indiemike ZoomZoom

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    [Feb 26, 2010]
    Didn't really fancy draining it again lol, is there no bleeding screw anywhere
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  7. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Feb 26, 2010]
    TBH if you slacken the header tank it will prob drop by the morning as the air escapes. Top up and away you go, as long as the pipes are warm and the heater works, water is where it should be.
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  8. Matt82
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    Matt82 Active Member

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    [Feb 26, 2010]
    the system is designed to be self bleeding

    make sure the tiny little return hose back to the expansion tank is flowing properly. if thats flowing fluid then its bled
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