08-08-2011, 03:01 AM
My 2000 SPI had the same issue, my misfire was on number 4. replaced the wires, plugs and coil and still got it. My issue was a faulty fuel injector. Replaced the injector and has been running great ever since.
2000 Focus ZX3
2000 Focus SE Wagon
2006 Dodge Ram 2500
2000 Focus SE Wagon
2006 Dodge Ram 2500