Posted on by

Cummins N14 STC, Celect, Celect Plus – Service Manual Variable Speed (VS) Governor – Surge with Engine Under Load

Symptom Tree  t127

This is symptom tree
Cause Correction

Air in the fuel system

Check for air in the fuel system. Refer to Procedure 006-003 in Section 6.
 

Variable speed (VS) speed settings are not correct

Adjust the external idle and high?speed screws. Refer to Procedure 005-028 and Procedure 005-029 in Section 5.
 

Idle spring is not required

Check the fuel pump code for idle spring requirements. Remove the VS idle spring if it is not required. Refer to Procedure 005-057 in Section 5.
 

Governor springs are not correct

Check the fuel pump code. Replace the fuel pump if necessary. Refer to Procedure 005-016 in Section 5.
 
Last Modified:  18-Jan-2012
Avatar photo

Published by Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.