like i said cylinder 1 is missing , we checked the sparks( put all new) the coil is fine dont think its the o ring cause im not losing oil think it might be the injectors but id like some more input please anybody!!!!! its a 2000 2.7 biturbo, and im wondering if its common problem with this car. its my 4th audi. i had a96 a4 96 a6 and a 98 a4 avant and never had any major problems with them. and i only feel it when its below 2000 rpms(ITS A 6 SPEED)

 

you wont get much help in this section, the only thing we do here is say Hi welcome to audiforums! go post in the specific section to the car that you drive. thanks!