Ive got a 1988 mustang 2.3 that I had the long block rebuilt. ive had the car running for about four days. it idled realy poor.when i unplug # 1 wire it does not change idle so i checked and recheck the timing. its at 10 btc with no spout. changed plugs wires cap and rotor. restabed the dist. thee or so times. switched injectors around. cleaned the idle air control. and changed o2 sensor. whats left? check the timing belt again? (no tab by the way. used the string method.) maybe check compesion.(that would upset me its a new rebuilt long block.) please help. im just a shadetree guy and no expert on 2.3.