I own a 2003 dodge ram 1500 5.7 hemi, the problem I'm having is the engine light comes on I put the code reader in and tells me # 8 cylinder is miss firing. I' ve changed the coil # 8 to # 4 to se if it was the coil,
then changed the two spark plus on # 8 cylinder and still the light comes on and goes out off and on.

Just anted to kno what else can I do.