cylinder order...

[1781cc]

hi guys, I have to change a coil-pack on cylinder 7, but I can't seem to find a clear guide anywhere as to the cylinder layout.

Does anyone know which one is correct:

4-Back-5
3-------6
2-------7
1-front-8

or

4-Back-8
3-------7
2-------6
1-front-5

thanks in advance

[cobraBLACK]

It would be nice if Audi just had numbers on the rocker covers to identify each one - even if it was down next to the coil packs so as not to spoil the view!

Sorry, I cannot help you.

[1781cc]

I know, all the other cars I have had have been crystal clear... no, leave it to the efficient Germans to miss out something like this

[nihc]

Hi,

It's the 2nd one. I spent ages the first time I had to find out the cylinder order and ended up getting the info from the audi erwin site.

Chris.

[chunky79]

Audi say that it's best to change all packs together if you have a failure. I know it's a nice way to make money but it's also a pain in the ass to strip and change another one the next week.
Sorry but i don't know the firing order.

dunc

[1781cc]

they were all new 4 months ago, not doing it again so soon, one I can accept, 8? not unless they wanna send me a cheque

[chunky79]

I take it your goung to claim warranty on the one thats failed ?

[AdrianE]

Audi say that it's best to change all packs together if you have a failure

Must be dealer/human being specific - they told me categorically NOT to do that, as coil pack failure has too many variables on how long they last. The fact 1 has failed doesn't indicate the rest are about to - which is the reason I asked when 1 went down on my A6.

I fitted a replacement after my mate vag-com'd the car to ID the dodgy one and keep a spare new one in the boot in case it happens again and we're away from home - hopefully then anyone with the correct diagnostic kit can ID the duff one and have us on our way.

My failed one was late last year, so 1 year on none of the others have given problems (touches wood, lucky rabbit's foot etc etc)

Adrian

[chunky79]

The coil packs are very delicate and they say even just disconnecting them can break them. To do them on the s4 you have to disconnect the whole side to change 1 cause of the plastic on the harness.
I was lucky and got a good discount on mine from audi so did them all

[xyber]

[Jez141]

Just as a side note if you only just changed coil packs 4 months ago , you may want to change the plugs too as you may find one shorting under load will cause coil failure......

[1781cc]

MRC did the plugs not long ago as part of the service and while we were trying to find a misfire issue that they traced back to the airflap. I am assuming it is the coil pack because of the way it behaves and also the fact that it is always on the same cylinder (according to VAGCOM) will see if that is the problem when I swap it out. might even try swapping 7 to 6 and see if the misfire moves

[AdrianE]

The coil packs are very delicate and they say even just disconnecting them can break them. To do them on the s4 you have to disconnect the whole side to change 1 cause of the plastic on the harness.

The 6 pot is the same - whole bank at a time to be unplugged from loom. Pig to do if you don't know where to apply leverage to get the clips open, but once you've broken one they're easy enough to get out.