jeep just kept turning over, changed fuel filter, fuel pump,wires,plugs,dist., rotor. Jeep would start if i prime throttle body with quickstart. Would run for hours like new, turn off and try to start again like 20min later, no start. Took off throttle body and cleaned, after reinsall throtle body, used throttle body cleaner. Ran good but after about 15-20min would not start again, just keeps turning over. Only can start with quickstar. WTF????? anyone else ideas?