Have you checked the knock senors and possibly the spark plug wires and plugs themselves? Self test....start the engine and carefully(very carefully) remove the #1 spark plug wire. If the engine sound doesn't change then there is no spark for sure getting to that cylinder. Now do the same for # 6 and listen. If same trace back to the coils and if it's got new coils trace back further to the power source. Hope this helps! Could be as simple as a couple of bad connections to the spark plugs or the plugs are fouled up!

 

Yep.
I did pull the no 1 and 6 wires from the coil. Did dot make any difference to the engine.
Sorry for not knowing, but where are the knock sensors located ?

Regards

John

 

Hmmm...that's a tough one. On my 20v 5cyl both knock sensors were located on the block...(drivers side) spaced about 8 inches from one another. I would try there first. If you can't located them then I would call the dealer and ask them where they would be.

 

Hi i had same probs with mine,its the spark plugs i know you pulled out 1 and 6 for testing so their will not be any difference in engine noise cause they aint woking anyway, get new spark plugs mate.

 

Yeah I think I would agree with you 4 Rings...But you must make sure you get the absolute correct spark plugs. Don't get something cheap. You should never nickel and dime these audi engines, as they are very tempermental. Trust me BTDT! Go with the bosch plugs I believe they are F6DTC.