Hi. I recently bought an 86 f150 with the 4.9 v6. The guy I bought it from changed the manual fuel pump right before I got it. The truck ran fine the first day, then started to act up. The truck is running very rough and smells rich. It acts like its missing so I replaced the plugs, wires, cap and rotor. Still runs bad.

Ive changed the oil and there was some fuel in it from the fuel pump going bad. The auto choke is fully open after a few minutes of running and the pcv valve has plenty of suction. So, they both seem to be operating correctly. Im not sure what else to check so any help would be great.

 

You meant inline 6 right?

Is this a carbureted motor? If so you could have a saturated float or a needle that isn't seating.