White smoke occurs in a diesel engine when the diesel fuel goes through the engine and reaches the exhaust without having been burned. This typically occurs due to the engine being too cool to burn the fuel, often resulting from low compression in one cylinder, problems with the fuel injection timing or a defective fuel injector.Continue Reading
Other causes for a diesel engine failing to burn the diesel fuel and producing white smoke include poorly sealed piston rings, burnt-out glow plugs, poor fuel quality or a clogged air filter. Extreme engine problems, such as a cracked block, a cracked cylinder head, leaking valves or a blown head gasket, can also cause the problem.
Sometimes white smoke only appears when the engine starts cold, going away as the engine warms up. When this occurs, it is typically due to deposits around the piston rings. Products designed to flush carbon away from the pistons often cures this problem. If the white smoke is due to the engine being too cool, adding an automatic pre-heater may eliminate white diesel smoke.
Diesel engines also sometimes produce black or blue smoke, both of which are also signs of problems within the engine. Black smoke indicates poor combustion of the diesel fuel, and blue smoke is a sign of oil burning within the engine.Learn more about Engine
A diesel engine is powered by extreme air pressure that ignites the fuel in the cylinders to create internal combustion. This is why diesel vehicles require drivers to wait several seconds after attempting to start the ignition. The waiting period gives the air pressure time to accumulate in the cylinders.Full Answer >
Gasoline that is mistakenly poured into a diesel engine can potentially damage the diesel engine pump, fuel tank, fuel lines, injectors and other engine plumbing. The damage to the system will likely entail large repair costs with some of the key components of the engine needing to be replaced. When accidentally filled with gasoline, a diesel-engine car will still be able run for about a minute or so before stalling.Full Answer >
According to United Diesel, causes of a non-starting diesel engine include low compression, insufficient fuel pressure, faulty glow plugs, contaminated fuel and low crank speed. Others include insufficient fuel, clogged fuel filters and internal engine problems. Many of these issues require professional evaluation with sophisticated diagnostic equipment. Others manifest clear symptoms that help vehicle owners identify the problem, even if they lack the equipment to fix it.Full Answer >
Key components of a diesel engine include the fuel injectors, glow plugs and solenoids, the air intake system, the crankshaft, and pistons and cylinders. A diesel engine is similar in many respects to a traditional gasoline engine, especially concerning components such as engine oil and coolant systems.Full Answer >