After rebuilding the engine in my 873 (Duetz BF4M 1011f) I can't get the engine to stop using the fuel rod. I have pulled the solenoid (was new) and manually attempted to close the injection pumps using the rod to no avail. I assume I have an injection pump issue but don't know how to diagnose without new pumps. I did attempt to pressurize a pump with air and move the lever back and forth but couldn't tell if it was release air or not. Any help is appreciated.