Nova Bus · Canada · Crit
Nova Bus LFS: Engine
Affects Nova Bus LFS · 2013 — about 4 vehicles.
The hazard
On certain buses with Cummins Westport ISL-G engines, excessive engine crankcase pressure could cause the vent tube assembly elbow to detach from the breather. This could allow engine oil to come in contact with hot surfaces, increasing the risk of fire. Excessive engine crankcase pressure may also result in low engine power and cause the engine diagnostic lamps to illuminate. Dealers will install clamps at both ends of the elbow of the breather tube assembly and reprogram the Electronic Control Module (ECM) to improve diagnostic capabilities.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational