what cause misfire on cylinder #3 & #4? I done replace spark plugs and coils.I swap Injector #3 to Injector #1 and Injector #4 to Injector #4 nothing change misfire still on 3 & 4 cylinder #1,195psi cylinder #2,190psi cylinder #3,185psi cylinder #4,190psi.
May 5, 2026 at 7:33 AM