Originally Posted by
mlrebel90
i just bought a 93 f150 6cyl 4x4 with around 195,000 miles the truck will free rev just fine but when put under a load falls flat on its face the guy i bought it From did a Complete tune up (plugs, wires, Distributor, rotor button, Coil) brand new computer new fuel pump and it wouldnt go over 30 mph i got the truck changed the fuel filter and what came out was brown and nasty i went through pulled each plug cleaned and gapped them (Previous owner didnt gap) fixed some broken vacuum lines and plugged in a few things that were unhooked truck will now hit 45 but you have to hold it to the floor and any kinda grade makes it fall flat again im looking for some more ideas im thinking maybe change the fuel lines or possibly blow them out if possible any help is much appreciated