After putting a mark on my idle screw, I have found out that it is turning on its own and dropping my idle, hence why my engine idles rough after a while. I am going to add a drop of RTV to keep it from moving again. I am curious to know if this is a common problem for the 22re fuel injection, and is it something more that i need to look into?

 

no its not common it sounds like its time to replace the screw

 

There may be an o-ring on the screw you can replace.

 

Or a spring? On carbs anyway, adjusting screws (like an idle screw) have a coil spring rapped around the threads. I assume it keeps tension to reduce self-spinnage.

 

Yup , I'm guessing it's from vibration .