Diesel Runaway
Diesel runaway is when a diesel engine runs on its own oil or other fuel source and races out of control.
What is Diesel Runaway?
Oil leaking into the intake, often from a failed turbo seal, can feed the engine. Switching off the ignition does not stop it. It can destroy the engine within seconds. Blocking the air intake can stop it on some engines, but it is dangerous and should only be done with proper tools.
How it works
The diesel ignites any burnable vapour by compression, so it keeps running as long as oil or vapour enters the intake.
Why it matters for your car
Stay away from the engine bay if it happens; engines can fail violently. In a manual car, stalling the engine in a high gear with brakes applied can stop it.
Other terms
- ABS (Anti-lock Braking System)
- Actuator Test (Output Test)
- Blower Motor (Heater Fan)
- Brake Cleaner
- Brake Disc (Rotor)
- Brake Disc Minimum Thickness
- Connector Corrosion
- Crumple Zone
- Far-Side (Centre) Airbag
- Ignition Lead (Spark Plug Wire)
- OEM Parts (Original Equipment)
- Off-Road Vehicle (4×4)
- Planetary Gear Set
- Purge Valve
- Radiator Stop Leak
- Residual Value
- Scuttle Panel (Cowl)
- Thread Locker
- Vehicle-to-Home (V2H)
- WMI (World Manufacturer Identifier)