[s-cars] S6 pinging woes - the continuation

[Jerry Scott]

Could be that the timing belt is off one sprocket. Did someone recently do 
the belts?
Jerry
----- Original Message ----- 
From: "Bares, Vittorio" <Vittorio.Bares at nuance.com>
To: <s-car-list at audifans.com>
Sent: Monday, July 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 -
>
>
>
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