Quote:
Originally Posted by ErvGotti
Usually three things with these engines Plugs, Coil packs, then injectors usually in that order. There really is no way of knowing until you pull codes. Could also be carbon build up or HPFP.
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+1.
When the engine missfires it shutters. It will feel like your driving on square tires instead of round ones!
IF your spark plugs have more than 45K miles, its time to change them. Most change then at ~25K with a tune.
The first thing you really need to do is read the DME fault memory. Then go from there.