Engine shimmy on acceleration

[stuco]

Today my engine started acting up. It vibrates while idling and gets worse when I accelerate. What could this be?

 

[paulx022]

Today my engine started acting up. It vibrates while idling and gets worse when I accelerate. What could this be?

stuck valve?
fuel filter/pump
bent lifter
plug/wires
pocket of air in one of the injectors (will pass on its own)
idk what else thats just what id look for