hi every on i have a 2001 4.2L f150 the engine threw a rod out the oil pan so i bought a wrecked 1998 truck that someone had just put a new crate engine in fron jasper engines gave 300$ for it.now for the problem swaped engines i put the 2001 upper plentum on the 98 engine and swaped it to the 2001 injectors put new plugs in ...it starts and idels fine but when u give it any throttle it starts missing,if hold rpm around 2 to 3 grand it seems to clear up its the same when i try to drive it but has no power can any one help