What does diesel engine runaway mean?

[MaciRose]

Diesel engine runaway refers to a malfunction where the diesel engine's speed becomes uncontrollable and continuously increases. Runaway can cause major accidents such as cylinder seizure or crankshaft breakage in diesel engines. Diesel engines typically experience runaway faults either during startup or when the load suddenly disappears or decreases during operation, but they do not experience runaway faults under load. There are two main causes of runaway: one is excessive diesel fuel supply, and the other is engine oil entering the combustion chamber and burning. If runaway is not handled properly while driving, it may lead to traffic accidents. Below are the causes and solutions for runaway: 1. Excessive diesel fuel supply: Causes thick black smoke from the exhaust pipe during runaway. You can inspect components of the fuel supply system and perform repairs after analysis, such as the fuel pump, injector, governor, and other parts. 2. Engine oil entering the combustion chamber and burning: Causes blue smoke from the car's exhaust pipe. You can inspect components of the lubrication system to determine if too much oil has been added or if the oil does not meet requirements.