Picked up a 1991 4x4 4.0 long bed a few months ago. Needed a new battery and would crank but wouldn’t start. Changed distributor, ignition coil, wires, plugs, and CPS. Now it has a hard start and a little rough idle. I’ve done the fuel filter too. There’s a weird DIY vacuum setup so idk if that’s affecting it. It starts everytime but I’m afraid I’ll wear out the starter. If I start it and then turn it off and turn it back on it starts up right away. Maybe fuel pressure or weak spark?