From worn cylinders and piston rings to faulty injectors and valves, there are many reasons a diesel engine may emit excessive smoke. Fortunately, the color of smoke can help a motorist diagnose the problem. Depending upon the issue, a diesel engine will emit black, blue, or white smoke.
Glow plugs are pencil-shaped objects that help diesel engines start. In essence, they serve as the diesel equivalent to spark plugs found in gasoline engines. Unlike spark plugs, glow plugs use heat to get the engine going. In cold weather, glow plugs play an especially important role.
Diesel engines contain many components and small systems. Problems with systems and components can lead to hard starting and the need for a drivability diagnostic. When your diesel engine is hard to start, there are several things worth checking. First is the temperature. Diesel engines rely upon heat for the combustion process to occur.
By default, diesel engines produce a louder roar than their gas engine counterparts. However, not all loud noises are normal. Sometimes diesel engines will begin to make excessive, worrisome sounds.
A turbocharger is a forced induction system, which is responsible for bringing air into the combustion chamber of an engine. Turbochargers are powered by a vehicle’s exhaust gas. The exhaust gas spins the turbine wheel, one of the components within the turbocharger system, and the turbine wheel spins a compressor wheel.
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