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B5.9G, B5.9LPG, B Gas Plus, B LPG Plus, and B Gas International Engines – Engine Noise Excessive

Symptom Tree  

Drive belt is loose or has high loading

Check the drive belt tension. Adjust as necessary. Refer to Procedure 103-002 (Drive Belts) in Section 6.
 

Air intake system restriction

Check the air intake system for restriction. Refer to Procedure 010-059 (Air Cleaner Restriction) in Section 4 or the OEM service manual.
 

Overhead adjustments are not correct

Measure and adjust the overhead settings. Refer to Procedure 003-004 (Overhead Set) in Section 6.
 

Turbocharger noise

Turbocharger fluttering noises can be heard during deceleration or quick throttle closing. This noise is normal.
 
Contact a Cummins Authorized Repair Facility

Last Modified:  16-Feb-2005
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