There is times when the gas pedal feels smooth when pressing gas on firt gear. Other times it feels hard or like if it's getting stock somewhere. I try to put oil on the throttle spring where the acceleration cable is located. The problem still continue. I also have cleaned the intake manifold for corrosion or dirt. Has anyone had this problem before. Please I need help.

 

your gears have nothing to do with the way your gas pedal feels, just to clear that up....

 

Dismount and remount the gas pedal - and its STUCK not STOCK