My 1990 f150 4x4 don't jump out the hole and bucks on acceleration also won't rev out when in park.... Gets to a point and levels out ..but after driving then parking it will... I've changed plug and wires, button and cap, fuel and air filter, and pressure regulator any help would be awesome

 

Engine codes?

 

Yes it had to do with the E.V. A. P. on or bye the egr. I think it was 67 but don't quote me on that