[s-cars] Misfire 95.5 S6 Avant

[Jerry Scott]

I've been chasing this same problem for about 2 years.  I have done the 
usual switching of the pos, replacing the boot for the #2 cylinder, and 
replacing the plug for that cylinder with a used plug.  The misfire 
comes and goes but is always on #2 cylinder.  The plugs now have 26K on 
them, so I will try replacing them all soon.  This seemed to fix the 
problem the last time that I changed plugs. The only thing that I 
haven't done is replace the coilpack.  Some have told me that it is 
caused by the change over to Summer fuel, but not sure I believe that. 
Keep me informed.  By the way, you do not have to remove the fuel rail 
cover to check for misfire.  You can remove the injector connectors with 
the cover on.

Jerry Scott
Denver

Rich Dauenhauer wrote:

>OK so out of blue...REALLY. No change to anything,
>misfire on startup. Pulled cover off fuel rail and
>tested which Cyl. was the culprit. #2. Messed with
>connections to no avail. 
>Q: so according to what Ive read its either - plugs,
>wires, pos, or coilpacks.
>I checked around for a comprehensive troubleshooting
>guide but cant find one. How do you narrow it down?
>Id rather fix it myself than take to the Stealer!
>
>R.  
>
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