Need help at the moment drive a V70 Bj 2009 with 2.4 liter diesel and 163hp Is a D5244T5 In the fault memory there are misfires in the 5 cylinder. Occasionally it jerks for about 10 to 20 sec and then it runs normal again. Does occur at constant speed but also with fast upturning. The correction value of the 5 cylinder is considerably increased. Does this speak for a defective injector? If yes, where can I have it repaired best? Thanks already.