[s-cars] S6 pinging woes - the continuation

[Bares, Vittorio]

The car does consume some coolant - I suspect the HG, but never
connected the dots.

 

Compression test and leak down will be next on the list...

 

Thanks,

 

Vittorio -

________________________________

From: djdawson2 at aol.com [mailto:djdawson2 at aol.com] 
Sent: Tuesday, July 28, 2009 2:40 AM
To: Bares, Vittorio; s-car-list at audifans.com
Subject: Re: [s-cars] S6 pinging woes - the continuation

 

You need to check your compression.  My money is on a blown headgasket
between 2 adjacent cylinders.  The cylinder firing first is preigniting
the second cylinder... resulting in the heavy pinging sound even at
idle.

Start at cylinder number 5... seems likely to me that it is blown
between 4 and 5.

Good luck,
Dave



 

 

-----Original Message-----
From: Bares, Vittorio <Vittorio.Bares at nuance.com>
To: s-car-list at audifans.com
Sent: Mon, Jul 27, 2009 7:29 pm
Subject: [s-cars] S6 pinging woes - the continuation

Hi all - so here's what I've done since the last call for help:









 









Changed Stage 3 chips out of ECU









Backed out wastegate spring to stock









Replaced O2 sensor









Replaced FPR









Replaced TPS









Replaced RS2 injectors w/stock injectors (used)









Replaced sparkplugs (NGK BKR7E gapped @ 0.025)









Was informed that the fuel pump is already relayed









 









Sparkplugs are consistent in color - they look like the car is running




rich.









I peered down into the cylinders via the sparkplug holes - all cylinders




had the same color (grayish green) and I saw no signs of damage.









 









Car pings just revving in the driveway - if I get on it, as soon as I




can hear the turbo spool, all pinging goes away - but on the way there,




there's lots of loud pinging :o!









 









The car idles slightly rough - and I *think* I can hear some noise




coming from the bottom end - very light, sounds like, I dunno, sounds




like something is just slightly loose.









 









I've thought about the coils - but I don't think this would be the




result of a bad coil would it?









 









Anything else I should check?









 









Vittorio -









 









_______________________________________________




S-CAR-List mailing list




http://audifans.com/mailman/listinfo/s-car-list




http://www.audifans.com/kb/List_information





 

________________________________

An Excellent Credit Score is 750. See Yours in Just 2 Easy Steps!
<http://pr.atwola.com/promoclk/100126575x1222377107x1201454434/aol?redir
=http://www.freecreditreport.com/pm/default.aspx?sc=668072&hmpgID=62&bcd
=JulyExcfooterNO62>