was getting a hesitation every know and then and then when sitting still check engine light comes on found out during diagnostic it was air idle problem so we replaced the idler ai idler or whatever and it cleared the computer but continued to run rough and sputter with low power so I replaced fuel filter,o2 sensor pcv valve,plugs wires,cap,rotor bug,changed the oil, put fuel treatment in,and runs rough sometimes when i gas it from takeoff it would blow the pcv valve out and backfire i checked the firing order everything is good,still runs rough like missing and can smell fuel a little, need advice???please help
Apr 26, 2009 at 12:38 AM