Warm it up Diesel engines clatter when they are cold. This is because diesel engines rely on the heat generated by compressing air in the cylinders in the engine for the diesel to ignite, with a cold block and cold air, combustion is not very efficient. When you start a diesel engine for the first time of the day, let it idle for a few minutes. This gives the engine ample … [Read more...] about 7 Little Changes That’ll Make a Big Difference With Your Diesel