Question about Audi A6

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I just bought a car 96 Audi a6 quatro. Water was overflowing from the extension reservoir cap and it was fine after I replaced it. I drove it all day and when I was parking at home something bursted and steam started coming out. I turned of the car Opened the hood and didn't see any water leakage. I started the car again it started fine no overheating. I let it stay running and gave some rpm and it was normal. I let the engine cool down and I saw the coolant tank was empty. I filled the coolant tank. After a while saw cooling leaking from the back side of the car, I guess from the tom of the transmission. What is leaking? I think water pump is upfront. Is this kid of a leak is common with Audi? Can I fix it myself. I replaced a water pump on a Honda civic before.

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  • siddikov879 Apr 28, 2010

    I am sure I have a leak. Because I fill up the coolant tank to the level and it keeps dropping down. and I saw a coolant leaking from the top of the transmission. Is there a weak spot on Audi that is prone to leakage? Some people on line say water pump or aux. coolant pump. where are they located?

  • siddikov879 Apr 28, 2010

    coolant cap has been replaced because it was leaking. This evening whenever I tried to park, something burst-ed and steam came out. But after I restarted the car it was operating normally: did not overheat. But when I fill up the tank it is leaking from the rear passenger side of the engine. What do you think this is? bad thermostat? water pump? What is causing that much pressure to burst the cooling system?

  • siddikov879 Apr 28, 2010

    I Found the leak: It is leaking from the valve like peace right before the rear wall on cooling hose going to the heater core. What is the name of this peace. I took pictures put i can't attach them to this message. If i replace that peace would the problem be solved. Why it is leaking from there even though i am not using the heater? is my thermostat stuck open? what opens the coolant flow to the heater core?

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No way to tell whats leaking without looking. you may have a intermittant stuck thermostat which is the cause of why the leak happened at the rear of the rear of the engine. its also possible you have a head gasket issue. There are test a shop can do to confirm what route to go. without doing the test to eliminate the possibilities none will be able to conclusively tell you why. having a 14 year old car leads me to believe it can be anything from a bad hose to a intake gasket to a deeper issue that caused this leak to happen.

Posted on Apr 28, 2010

  • Susan Price Apr 28, 2010

    you need to trace the leak with a mirror and a flashlight.. This is not a guessing game. this is the only way a professioal would be able to find the problem. You stated you just bought the car. Ask the seller. I'm sure he knows whats wrong and its possible he sold the car because you have an expensive issue he did not want to deal with. This is very commom

  • Susan Price Apr 29, 2010

    best bet is take the picture to the parts house so they can match the part up. If we tell you the wrong part name you could end up paying for the wrong part.. This is most likely a factory part being an Audi.

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Hi! Try this... When putting coolant on the reservoir please make sure that its not full, make sure that its sitting on just the MAX / HI level which is usually indicated on the reservoir itself. This should get more room for air to circulate for filling it too much doesnt give space for the fluid to circulate normally. Which will result to coolant overflowing specially when engine is hot. Thats the reason why you have coolant leakage. Its just a good thing you monitor your car frequently. Try to check for cracked/worn hoses for it too can cause coolant leakage. Hope this helps and have a good one!

Posted on Apr 28, 2010

  • dj_relly999
    dj_relly999 Apr 28, 2010

    If you did got a steam I'm pretty sure that its a cracked water hose. When there's too much pressure it leaks, if its leaking on the rear then the water hose on that side will need replacement. Make sure that the engine is cool down before replacing to prevent injuries.

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