Check compression. Is it even on all cylinders? The most common problem is getting the plugs wrong. If plug wiring is "180 degrees out" it will NEVER start. Determine plug timing by turning the engine by hand until it comes up to top dead center mark on the harmonic balancer. Then, if you can leave the rocker cover off, watch the rockers for #1. Turn it a little either way and if either rocker is moving, you're not on #1 TDC. IF they're moving, turn the crankshaft 360 degrees (all the way around once) until you're back to the #1 mark on the harmonic balancer. This time, when you turn the crankshaft a little either way you should notice that the #1 rockers don't move. Once you're certain that you're at #1, connect the plug wires to the right place and if everything ELSE is right, it should start.
electronic spark modulator bad.
You probably have a bad Electronic Control Module. They are notorious for going bad.
try to get a new ignition rotor
How about the plug cables? Check connections at distributor and harness, and they should generally be replaced at the same time as the plugs.
The most common failure associated with those symptoms is the Crankshaft Position Sensor.
IT IS A BAD IGNITOR ON THE INSIDE OF THE DISTRIBUTOR.
Is it getting spark?, if it isn't getting spark to the plugs and you have a HEI distributor the ignition control module could be blown, take cap off and replace the module, it's the thing with the wires plugged to it inside the distributor.
My 1995 Nissan Quest is acting really strange. It is acting like its either misfiring or not getting enough gas and wants to cut out on me and it jerks sometimes hard. What could it be. I put new plugs and wires in, and just replaced the distributor cap and rotor for the distributor cap.
Check the fuel pump, rotor, and distributor cap.
you probably need head gaskets. recheck the coolant in the radiator when the engine is cold. if its low even though you just filled it when you replaced the thermostat, and you dont see any external leaks, i would strongly suspect head gaskets. its common on these. and sometimes no heat is the only symptom the driver notices!
it has to be the distributor cap or rotor or wires...plug wires.
try the distributor module . may not be getting fire.