Another pesky misfire

JohnE

2005 A3 Sport 1.6 FSI
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1.6 FSI, 94k FSH
This pile of junk has always had an intermittent missing at tickover - irritating, but not terminal.

Now it is doing a "jerk" on constant light throttle.

The Audi Specialists found no fault codes when they serviced it about 8 weeks ago, so I took it to the local tuning guy today - he can't find any faults either, but the blinking thing is really annoying.

Any ideas?
 
I would give the MAF a clean, and possibly change the pre-cat Lambda, if everything else fails.
 

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