Why is a diesel generator hard to start in cold weather? 0Diesel engines rely solely on compression to raise the temperature of the air to a point where the diesel combusts when introduced to the hot high-pressure inside the engines combustion chamber.
In cold weather, engines are harder to start because the cylinder block absorbs a lot of heat from compression that is needed to ignite the diesel fuel. To help in starting, most engines use glow-plugs. Glow-plugs are heaters in the in the combustion chamber or pre-chamber that help heat up the air, and they do help. If you have them