I am trying to figure out why my truck wont run It is a 95 Ford F150 4.9l straight six I just replaced the fuel filter and am thinking about changing the fuel regulator I dont have a problem starting it but it wont stay running I have no clue on wat else t do please help

 

Lets see...could be dirty fuel injectors, dirty mass air sensor(if it has one, i dont know), bad spark plugs, bad spark plug wire(s),cap or rotor. If not one of those, try checking to make sure you have full fuel pressure.

 

map sensor? Had a 90 4.9 do that once. Its up on the firewall on the pass side. Just a thought.