My "new" 1986 Samurai has an inconsistent bad misfire.

I've put a couple cans of "Heet" thru it and replaced the fuel filter. I changed the plugs, wires, distributor cap and rotor.

What should I try next?

It comes and goes. It seems to run better after I hit a hard bump and then worse after I make a tight right hand turn.

Thanks!

Problem solved. I replaced the coil and it runs great!