Hi all I'm new to this forum and I really hope you guys can help me !

2000 Subaru Impreza, completely stock. 218,000klms. 5-speed, 2.0L

equipped car with the a 3inch muffler. The car misfires on cyl 2 and 3.The misfire is intermittent, it basically happens whenever the **** it wants to. It will happen most of the time on partial/light throttle around 2000-3000 RPM in any gear or neutral. There is an audible humming coming from the engine bay when the car is running which leads me to suspect an injector, but I assume it would have to be both injectors.

I will be replacing
Spark plugs
Fuel filter
Fuel pump
Tomorrow to see if these are the reason that are causing this problem !

If anyone has ever had this problem and has the solution please share ! Or any other ideas to fix this !