M11 Industrial Operation and Maintenance – Engine Difficult to Start or Will Not Start (No Exhaust Smoke)

Symptom Tree  

Electronic fault codes are active

For instructions on how to read active fault codes, refer to Procedure 101-007 (Electronic Controlled Fuel System) in Section 1. If fault codes are active, contact a Cummins Authorized Repair Facility.


Fuel level is low in the tank

Fill the supply tank. Refer to the OEM service manual.


Starting motor rotation is not correct

Check the direction of crankshaft rotation. Replace the starting motor if necessary.


Engine cranking speed is too slow

If the cranking speed is slower than 150 rpm, refer to the Engine Will Not Crank or Cranks Slowly symptom tree.


Exhaust system leaking hot air into engine compartment

Check the exhaust plumbing for leaks or broken components. Refer to Procedure 010-024 (Air Leaks, Air Intake and Exhaust System) in Section 5.


Fuel shutoff valve is closed

Check for loose wires. Check for power to the fuel shutoff valve solenoid.


Battery voltage supply to the electronic control module (ECM) is low, interrupted, or open

Check the battery connections, the fuses, and the unswitched battery supply circuit. Refer to the OEM service manual.


Fuel inlet restriction

Check for fuel inlet restriction. Contact a Cummins Authorized Repair Facility.


Fuel connections on the suction side of the pump are loose

Tighten all the fuel fittings and connections between the fuel tanks and fuel pump.


Fuel drain line restriction

Check the fuel drain lines for restriction. Clear or replace the fuel lines, check valves, or tank vents as necessary.


Fuel suction standpipe in the fuel tank is broken

Check and repair the standpipe, if necessary. Refer to the OEM service manual.

Contact a Cummins Authorized Repair Facility

Last Modified:  18-Nov-2004