High Pressure Fuel Rail Assembly May Leak Fuel – 2016-2020 Nova Bus LFS & LFS Artic

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May 14, 2021 NHTSA CAMPAIGN NUMBER: 21V351000

High Pressure Fuel Rail Assembly May Leak Fuel

A fuel leak in the presence of an ignition source increases the risk of a fire.

 

NHTSA Campaign Number: 21V351

Manufacturer Nova Bus

Components FUEL SYSTEM, DIESEL

Potential Number of Units Affected 644

 

Summary

Nova Bus is recalling certain 2016-2020 LFS and LFS Artic vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.

 

Remedy

Dealers will inspect the rail threads, and replace the rail as necessary, free of charge. Owner notification letters were mailed on July 9, 2021. Owners may contact Nova Bus customer service at 1-800-350-6682.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

 


SUBJECT:

Cummins L9 engines

 

JUSTIFICATION:

Cummins Inc. informed Nova Bus that some certain affected vehicles fuel rail assembly may develop leaks, which may result in an undetected prolonged diesel fuel spray. A leak involving spraying/misting fuel in the presence of an ignition source may increase the risk of fire.

 

Contact your nearest Cummins Inc. certified service center who will do the repair for Cummins Safety Recall No. C2423.

 


21E032 Cummins ISX12 & L9 Fuel Rail Assembly Inspection and Repair Procedure: External Fuel Leaks

 

21E032 Cummins ISX12 & L9 Fuel Rail Assembly Inspection and Repair Procedure: External Fuel Leaks

 


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