PACCAR PX-8 CM2150 (2007-09) Fault Code: 559 (ISC/ISL) PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid But Below Normal Operating Range – Moderately Severe Level.
The fuel system is designed to run on clean fuel. It has two fuel filters to maintain this cleanliness. Carelessness...
