I gota 2003 Ford Ranger.
The engine vibrates and shakes voilently when I floor the engine in neutral or park, its not a smooth exceleration its shakky and it sounds like I'm revving the engine when really I'm just holding the pedal to the floor.

Could this be the timing of the cylinders?

 

i don't any idea about Ford Ranger engine problem.if anyone has any idea about this . please share with me........