I have recently had some issues with my truck https://www.dieseltruckresource.com/...d.php?t=114688 . Today I found a issue with the AFC starwheel. I turned the starwheel completely back two days ago. Today I went to move it forward and it would not go with extreme force. What will cause this? Thanks.....

Dave

 

Turn on the key, lift up your shutdown solenoid then try turning it.
If that doesnt get it remove the cover and see what's up.