B5.9G, B5.9LPG, B Gas Plus, B LPG Plus – Engine Difficult to Start or Will Not Start

Symptom Tree  

Fuel level is low in the tank

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

 

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.

 

Battery voltage is low, interrupted, or open

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

 

OEM manual fuel shutoff valve is closed

Check the OEM fuel shutoff valves. Verify that the fuel tanks are open. Refer to the OEM service manual.

 

Fuel leak

Check the fuel lines, fuel connections, and fuel filters for leaks using the combustible gas detector service tool. Refer to a Cummins Authorized Repair Facility.

 

Ignition coil malfunctioning

Check the ignition coil. Refer to Procedure 013-012 (Ignition Coil) in Section 6.

 

Spark plug(s) damaged or incorrect gap

Inspect plug(s). Refer to Procedure 013-016 (Spark Plugs) in Section 6.

 
Contact a Cummins Authorized Repair Facility

Last Modified:  16-Feb-2005