I have a 94 Cherokee, it has about 80,000 miles, it just started missing (sometimes) I replace the plug, wires, distributor, and the crankshaft position sensor. The jeep will run smooth most of the times, however when it start missing, it like one or two plug wires came off, the fuel pressure is steady at about 32 lbs, it seem to be a electric problem. The check engine light doesn't come on, all gauges show normal. When it start missing it shack and it has no power. Any help would be greatly appreciated.
Thanks

 

fuel pressure should be 39lbs might wanna double check,just because theres no check engine light does not mean theres not one stored, check them any way could be possible injector issue