I was going to a buddy's house monday and my car was starting to get on empty. When I got to his house the car sounded like it was misfiring a little bit. Well This has happened to me before. So I did what I did last time. I changed the spark plugs. Did that and it still sounds like shit. I did a little cylinder clean out with some sea-foam and didn't help. I put gas in the car obviously. And still nothing. I pulled on wire off at a time with the car running and cylinder 1 seems to be the only one that doesn't seem to change the tone of the motor. My brother said I might have a coil going out so I changed the 1/6 coil and still nothing. Then he said I might have sucked something up with my pump running it on empty but I don't think it would have lasted this long. I do have a tiny fuel leak on the return line but that was there before the problem... and another thing how do you tighten the return on the fuel rail?