Re: Power Washed '99 4.6L Crown Vic engine - now blue smoke
Removed coils and rubber boots from all eight plugs. Found water (which was still there after a week of engine heat) around plugs. Used high power air gun to blow out water that was still around plugs and causing missing. Cleared codes. Service engine light no longer comes on.
Apparently this is a common problem on the 4.6L Ford engines. If the engine is washed, the preceding steps may have be taken. Dealers who sub out their detailing often follow the above routine.
Will monitor for blue smoke. Do not understand where that came from.