ok, i have a 95 5.0 auto vert. it was running fine when i got it. no problems. i put on bbk headers, o/r h pipe, flow masters with dumps,platium 2 plugs, and ford racing wires. when i started it up i had an exhaust leak on the driver side. ( not really a big deal). i drove it around for about a day. my gas was pretty low so i put it a few dollars, it started raining and i drove home. as soon as i left the gas station the car started hesitating when i started to go and sputtered. when i step on the gas and get on it, it is fine. but when i just go normally it does it. also sometimes when it idles at stop lights it sounds like it has a cam. but not always. im not sure what it would be. fuel filter? cap and rotor? im not sure. please help me