[s-cars] S6 pinging woes - the continuation

[Doug Landaeta]

..and the pressure transducer in the ECU is also stock? I went through  
an emmissions condition with a pt-injector mismatch.

Put a A/F ratio gauge on it and see if it's really rich and what the  
figures are across the range.

And yes, check the timing marks...

Doug

Sent from my mobile.

On Jul 27, 2009, at 9:46 PM, "Bares, Vittorio" <Vittorio.Bares at nuance.com 
 > wrote:

> not that I know of - but I haven't had the car all that long...has  
> 230k
> or so on it...
>
> I guess removing the valve cover and lining up the marks on the cam
> gears and checking that the crank pulley mark is at TDC would verify
> this?
>
> Thanks,
>
> Vittorio -
> -----Original Message-----
> From: Jerry Scott [mailto:jerryscott at wispertel.net]
> Sent: Monday, July 27, 2009 9:43 PM
> To: Bares, Vittorio
> Cc: s-car list
> Subject: Re: [s-cars] S6 pinging woes - the continuation
>
> 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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>
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