Looking at an 05 f150 supposedly runs drives clean title but says one cylinder has a burnt valve and if his foot ain't on the gas pedal it shuts off at stop signs. How could I fix the burnt valve and what's yalls thoughts about the shutoff issue?

 

Fix for burned valve, only one, replace the valve. Stalling, measure your fuel pressure. Check for codes. There's a good chance that the drivability issue could have contributed to the valve going south. More vehicle information is needed to go further.