1997 Jeep Laredo running like crap when warm

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel
I have had this problem for 9 months and it has been getting progressively worse. Most of the problems you mentioned would either be temporary or constant, not intermittent. I'll check the EGR if that may be a temporary problem.
I replaced plugs, rotor, cap, and I understand that may cause random misfires, however, I don't believe that it would cause what can be easily described as a timing problem. Motor diesels, won't start, dies at idle or under load, unburnt fuel odor, and these symptoms occur after the engine warms up. I'll replace the air filter, oil & filter, and plug wires next week and see what happens. Until then, any other suggestions?
Than you
Dan

If fuel were the problem, I wouldn't have the raw fuel smell right? If ignition were the problem, it would more likely happen hot or cold, right? If timing were the problem, it would be a constant and consistent problem, right? Same with the coil, right? What is it in a Jeep that approximate year that controls the timing of the spark to the plugs and times it with the injectors? Isn't there one or more specific modules or sensors that control when the output of the spark coincides with the timing of the fuel injection? Isn't there something electronic that makes adjustments with the control of the fuel based on what the computer believes is the proper amount of spark to the fuel it is injecting? A component that may be affected by the engine temperature? That's why I like old cars. They're so much easier to diagnose.
Thank you,
Dan