21-01-2021, 05:04 PM
Hi.
The other things that causes diesel runaway are: DPF choked and the system keeps trying a regeneration, that works by increasing the fuel to air ratio to increase heat in the DPF to burn off the carbon build up, the snag though is that the excess fuel passes the piston rings diluting the oil especially with a choked DPF, this happened to my sons Mitsubishi Outlander. Short runs can also cause the issue, the moral of that is "Never" buy a diesel if you do short runs because the DPF will choke and a cold running diesel will always pass fuel to the sump via the rings even without a DPF.
The other things that causes diesel runaway are: DPF choked and the system keeps trying a regeneration, that works by increasing the fuel to air ratio to increase heat in the DPF to burn off the carbon build up, the snag though is that the excess fuel passes the piston rings diluting the oil especially with a choked DPF, this happened to my sons Mitsubishi Outlander. Short runs can also cause the issue, the moral of that is "Never" buy a diesel if you do short runs because the DPF will choke and a cold running diesel will always pass fuel to the sump via the rings even without a DPF.
