i have accord 95 ex with f23a engine runing with ob1 orignal accord ecu POE.The problem is that there is engine missing problem no check light on.tps map coolent tempt sensor and iact valve checked and replaced.also all four injector are checked with multimetre and with tester.resistance box also good.but when i throttle vehical jerking and accelerating.it means low power.and if map sensor wires changed like signal wire on reference wire and refrence on signal wire then jerking gone but black smoke blows from exuast.what should i do.if any one give some help