2019 Won't start

[jakehester]

I have a 2019 model, and it will idle, run and drive great when it starts. If it sits for over an hour it keeps getting airlocked. Checked all of the fuel lines and components for cracks or leaks and have found nothing. The only way it will start after sitting with the motor off is with starting fluid. Any tips or advice would be greatly appreciated.

 

[USMC]

I would make sure that your rail pressure is staying where it should.

Diagnostic excerpt.

Diesel fuel from the fuel tank to transported to the fuel filter by the in-tank fuel pump. The fuel pump is driven by the fuel pump relay present in the MPDC. The fuel pump relay is controlled by the EMS ECU. The fuel pump turn On when ignition switch is turned ON. Fuel enters the fuel filter. The fuel filter has an in-built water in fuel and fuel temperature sensor. The signal from both sensors are sent to the EMS ECU. If EMS ECU detects water present in fuel, the water in fuel indication in the instrument cluster turns ON. Fuel then enters the metering unit. The metering unit is mounted on the inlet of the fuel unit pump. The metering unit controls the volume of fuel entering the unit pump. The unit pump pressurizes the fuel into the common rail. The common rail has a rail pressure sensor to monitor rail pressure build up. The fuel is then injected into each cylinder by individual fuel injectors. EMS ECU actuates the solenoids in the fuel injector in sync with engine timing for correct injection

 

[txroadkill]

Did the issue start after a filter change?


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