What to Do If Water Gets into Diesel? Can It Still Be Used?

1 Answers
Geraldine
07/25/25 5:26pm
Diesel contaminated with water cannot be used. Here are the relevant explanations: 1. Engine: Water in diesel can damage the engine. When the engine draws in air, it may carry some water into the intake tract, forming water vapor that mixes with gasoline and burns completely, which has minimal impact on the engine. However, if a small amount of water enters the engine and mixes with the oil, the oil quality deteriorates. Oil containing water increases wear on engine components, potentially leading to increased engine noise and vibration during future vehicle operation. 2. Precautions: If the engine starts and then shuts down again after a few seconds, and repeated attempts to start it fail, this situation is the most severe. Since water cannot be compressed, when water enters the cylinder while the engine is still operating at high speed, the inability to compress water during the power stroke can directly cause the valves and connecting rods to bend, the piston to seize, severe wear in the cylinder block, and the crankshaft to bend. It is recommended to replace the diesel fuel as soon as possible.
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