One cylinder stopped firing

[sekenzo]

Changed spark plug - no change
Swapped coil pack - no change
No oil in plug well so can rule out arching

Any other suggestions?

 

[StaceyS3]

Check the coil pack loom as these deteriate due to the heat in the area, the insulation cracks and breaks down

I had to replace mine awesome gti do a replacement loom to splice in if this is the case with yours, think it's £30 iirc

 

[BENJAMIN]

If its an AGU engine it will more than likely be your ignition amplifier on the side of the air box. A very common failure.

 

[aragorn]

Yeh, quite often cylinder 2 as well for some odd reason!

 

[xCoupexAshx]

i have the same problem and have tried changing the ignition amplifier too. to no success. when you say cylinder 2 do you mean 2nd from the right as in |4|3|2|1| layout? ta

 

[aragorn]

Cyl 1 is at the Drivers side of the engine.

I guess its possible the A3 is wired differently, but on the A4 its almost always cyl 2 that drops out first when the ICM dies.

 

[sekenzo]

It's cylinder 2 that died on mine as well! How much will the ignition amp cost? Thanks!

 

[A3 Oly]

about 70 - 100 for new bosch job or 20-40 second hand, although u dont know wether used ones are alreet or not

 

[sekenzo]

Thanks. Have anyone tried the 2.0t coil pack conversion on an AGU? Any idea / guide on what is involved?