Check to see if your vehicle jumped timing.
Use a code scanner to see what the computer says is wrong.
My 99 Jeep had the same issue, eventually it had No spark, I replaced the engine coil, it didn't work, had to replace ingnition sensor.
Does it have fuel, spark, compression?
Start by changing the spark plugs
I found that water leaked onto my distrib cap and under the mod caused a weak spark and took starting fluid to start till I replaced the mod No prob sence
The spark plug tubes need replaced.
Does it turn over? Does it have fuel/spark/compression?
I had that problem with my 98 Jeep Cherokee Sport, they ckd all kinds of things and finally replaced the fuel pump and then it was fine.
check your crank sensor it might need to be adjusted or replaced
If it cranks, first confirm spark present
crank sensor
No spark No fuel No compression