Po 304

[arcowboy]

I have a 2003 Ranger 2 wheel drive that I have been working on that keeps displaying this code.I have changed the plugs,plug wires and the fuel injectors. It is still thruwing this code but only if you leave it at and idle.nyone have any idea as to what else could be causing this ??

 

[BeaterMan]

is po304 cylinder missfire on the #4 cyl? maybe check the coil pack to make sure its putting out the correct amount of power to that cyl.