Hello all.. I have a 1985 RX7 ..12 a. Engine.. it starts.. and whem i give it gas ..it chokes..if you kinda pump.up the pedal a few times.it will actually rev upp anwill keek revving up as long as gou keep giving it gas.. if you let it iddle.. then it will try to shut off when you try to rev it again or if you are driving .. and you have to.hit the gas pedal a few times again to get it to revv up and keep driving.. any help?? Thanks.. Rick