[Biturbos4] Spark Plug change interval

[David Kavanagh]

now, I've noticed my A6 stumbling a little when it is very cold, but
that goes away really soon after I drive off. I chaulked it up to my
MAF being bad (it is going to the dealer for replacement on the 9th).
I haven't tried pulling the codes again to see any new ones have
showed up... I probably ought to do that, huh? :)


On Mon, 6 Dec 2004 12:30:47 -0500, David Lau <toomanycars at mac.com> wrote:
> Now this would explain alot:
> Mine misses commonly after cold start, both at idle and "just once" as
> you give some throttle to pull away. Additionally, when I complete
> light braking, as I pull up to a stoplight. - several misfires you can
> feel, then watch the tach recover as you release the brakes (lower
> vacuum?).
> 
> Now, my plugs were replaced at the 40k service last fall and to my
> amazement, no misfires! But that lasted for maybe 10 days! Right, less
> than 500 miles, and it's missing again. It's so bad now with the cold
> weather that I can't pull out of my driveway without fear of being
> rear-ended as the thing bucks and stumbles. Yet - no CEL. Is my APR
> blocking codes? Or changing the fuel mapping to foul the plugs?
> 
> I'm planning on putting the stock ECU back in, and if it still misses,
> take it to the dealer before the warranty is out.
> DL
> On Dec 6, 2004, at 9:59 AM, Keman wrote:
> 
> > You can
> > go longer but you can almost sneeze at an S4 engine and it misfires
> > while
> > idling. They're very sensetive to injector clogging and spark plug
> > gaps.
> 
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-- 
'00 A6 biturbo 6-speed
'01 allroad 6-speed