Subject to application and duty cycle, DEF dosing valve can clog up and
Nova Bus technical service bulletin LI4263ER1 for 2013-2017 Nova Bus LFS and 2013-2017 Nova Bus LFS Artic.
- Bulletin number
- LI4263ER1
- Component
- Engine and engine cooling: exhaust system
- Summary
- Subject to application and duty cycle, DEF dosing valve can clog up and cause engine to derate, stall, lose power and log FC3568. Increasing dosing valve and DEF hose angle can help reduce such occurrence. Vehicles reporting repetitive FC3568 can be modified according to procedure herein.
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