So I've had a rough idle for a while. I have 6 new plugs installed by dealer at last service, coils 1,2 and 6 are new due to failures, and 3 injectors were replaced under recall with the HPFP. I chalked the rough idle up to needing a valve cleaning. This morning when i started the car it ran really rough for a couple of seconds and was obviously missing. No codes though of course. This sounds like a leaky injector to me. Any thoughts from the eperts? Since there are no codes what's the easiest way to find which injector it is if it is an injector? Since the plugs are brand new (less than 1k mi) I assume one plug will look different than the others. Black i assume?
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