My 91 f150 picked up a miss. after i changed the fule pump one cyclender is getting fire but makes no diffrence when i pull the wire....please help!!!!!!its a 300 six banger...

 

Welcome, nice to have you on board.
Drop into the 1987 - 1996 F150 And Larger F-Series Trucks forum by clicking on this link: https://www.ford-trucks.com/forums/forum28/
You can also try the Inline Six, 200, 250, 4.9/300 forum https://www.ford-trucks.com/forums/forum52/
Be sure to visit your local Kentucky Chapter https://www.ford-trucks.com/forums/forum151/