Discussion Starter · #1 ·
My newly acquired 7 has just started misfiring, and I'm quite sure it is either a plug or coil. Is the job as daunting as it first appears? I've serviced my own Ferraris and Porsches so I was expecting the job to be no more complex or difficult..Am I wrong? Any advice from one who's replaced plugs before will be greatly appreciated.. Thanks in advance.