I have an 03 Exploder, I keep getting a #3cylinder miss fire code (forgot the exact code) but that is what it is. the light comes on the after a day or so it resets. Is this attributable to the fuel cap?

 

I doubt it, Dave. It's probably a bad spark plug on number 3, or possibily a bad plug wire. Or maybe just a loose wire connector.....

Number 3 cylinder is the one closest to the firewall, on the passenger side (if it's a V-6).

 

Its a 8 i'll have to look closer. there is so much stuff covering it up. Thanks for the info

 

Check for water in the plug hole the 4.6s are bad about that. also move the #3 coil and plug to #1 and see if the skip moves to that if it does and has o carbon track or water then change the coil and plug.