misfire

I have a 03 ranger 3.0 flex that has a 5th cylinder missfire. I have replaced the plugs, wires, coil pack, a cracked manifold on that side and done compression tests on each cylinder (@140). Before I had the missfire problem I had loss of power problem with a catalytic converter code. The...

The third cylinder in my 97' ranger is misfiring and I can't figure out why. I took it in to a shop and they spent 5 hours working on it. They said a fuel injector was clogged and the engine computer was malfunctioning and not sending a signal to the third cylinder to fire. They replaced the...