What Causes Loss of Power When Accelerating Due to Water in the Engine?

[Duncan]

Engine water ingress leading to power loss during acceleration can be attributed to the following reasons: Contamination of Various System Fluids: If water enters the engine, the spark plugs should be removed, and the fuel supply and ignition systems should be manually disconnected. Then, use the starter motor to crank the engine, allowing the water inside to be expelled. Additionally, inspect the fluid conditions in all vehicle systems. If foaming or contamination is observed, replace the fluids promptly. Corrosion of Related Components: After inspection, use compressed air to remove moisture from electrical connection points in the engine bay to prevent corrosion caused by water accumulation. Key areas to focus on include the fuse box, sensor connectors, and areas where water tends to pool in the body. After cleaning, conduct a road test to ensure the engine operates without abnormal noises. If noticeable driving noises occur, inspect the engine bearings and rotating components. Failure of Chassis Components: Chassis components are prone to lubricant degradation during water exposure, particularly in systems involving steering and drivetrain. For instance, the maintenance manual for the Land Cruiser recommends applying grease to chassis components after water exposure. During the road test, listen carefully for any abnormal noises from the chassis or perform a disassembly inspection if necessary.