Front engine coolant leaks... Check Oil cooler before Water Pump
AudiWorld Newcomer
Joined: Dec 2009
Posts: 2
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From: Bothell,WA
I took your advice and did a litle bit of investigating before I started the oil cooler removal. Turned out to be the oil cooler, coolant pipe after all though, but I felt better tearing into it knowing that for sure. The job went pretty smoothly once I figured out where the 5th bolt was. Total time was about 10 hrs, which included putting the core support, sorry "lock carrier" into and out of service position. The aluminum coolant pipe I bought from fusilier fit perfectly and saved me a ton vs. what the dealer wanted for the plastic part.
Thanks
Alex
Thanks
Alex
Thread Starter
AudiWorld Super User
Joined: Sep 2003
Posts: 5,002
Likes: 129
From: Fremont, CA
Alex,
Congratulations, what year is your A6? Did you take any pictures in the process? I may have to do one for my father 98 A6 (it was my lease return). It only has 90k miles, but it may leak anytime.
Thanks,
Louis
Congratulations, what year is your A6? Did you take any pictures in the process? I may have to do one for my father 98 A6 (it was my lease return). It only has 90k miles, but it may leak anytime.
Thanks,
Louis
AudiWorld Newcomer
Joined: Feb 2009
Posts: 2
Likes: 0
I have a leak also, 98'Quatro. It's kind of wierd. It seems as if it is coming from the plastic overflow tank, were the upper hose connects to the plastic tank. Is there suppost to be a lot of pressure in that tank? It just seems as if the "nipple" has a small crack and is leaking a small amount, but enough to have to top it off every 2 weeks.
Thread Starter
AudiWorld Super User
Joined: Sep 2003
Posts: 5,002
Likes: 129
From: Fremont, CA
As I understand Audi's cooling system is a closed system. There should not be any leaks anywhere and yes, the pressure is high when the engine is hot and immobiled. I think it's time for the new expansion tank, don't wait for it to burst one day on no man's land.
Cheers,
Louis
Cheers,
Louis
AudiWorld Super User
Joined: Apr 2004
Posts: 3,216
Likes: 1
Check the leaks and if it's the oil cooler, then you can go here for reference
http://www.freewebs.com/ltooz/98audia8.htm#421989509
Cheers and good luck,
Louis
http://www.freewebs.com/ltooz/98audia8.htm#421989509
Cheers and good luck,
Louis
Thread Starter
AudiWorld Super User
Joined: Sep 2003
Posts: 5,002
Likes: 129
From: Fremont, CA
I don't know what happened, but I heard a lot about these virus on the link. I think it's the re-directing to the correct page of the website. Anyhow, I'm rewriting the procedure here
http://www.dognmonkey.com/audi/a8-d2...placement.html
When I have time I'll finish it up.
Cheers,
Louis
http://www.dognmonkey.com/audi/a8-d2...placement.html
When I have time I'll finish it up.
Cheers,
Louis
Last edited by ltooz_a6_a8_q7; Oct 23, 2011 at 03:51 PM.
Thread Starter
AudiWorld Super User
Joined: Sep 2003
Posts: 5,002
Likes: 129
From: Fremont, CA
If it's the cooler leak, it should be from this broken pipe. The leaks will sip through the passenger side, behind the alternator down to the oil pan.
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