What Causes a Truck to Emit White Smoke?

1 Answers
DelMiles
09/05/25 4:21am
The reason a truck emits white smoke is due to the presence of moisture in the fuel or muffler. Here are the relevant explanations: 1. Blue Smoke Emission: (1) Phenomenon: During engine operation, light blue smoke is often visible at the tail of the exhaust muffler, accompanied by excessive oil consumption. (2) Causes: Oil level is too high; cylinder compression pressure is below the specified value; increased clearance between the piston, piston rings, and cylinder liner. 2. Black Smoke Emission: (1) Phenomenon: When the engine is running, black smoke is emitted from the exhaust pipe, and a pungent gasoline odor can be detected, especially during acceleration. (2) Causes: Overly rich air-fuel mixture; poor spark plug performance; delayed ignition timing.
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