Purchased Jeep for my son. 2.5 liter 4 banger. 73,000 miles on 1997 Jeep Wrangler

Runs great and then will start spitting and sputtering. Will not take the gas. Then will take it and run fine. Changed plugs and wires and TPS Sensor. The previous owner took Cat converters off. Help. Ready to sell

David

Asked by for the 1997 Jeep Wrangler
2 answers
MY"GUESS"WATER IN FUEL.
what about cap and rotor?