Does Water in the Fuel Tank Affect the Engine?
2 Answers
The impact of water in the fuel tank on the engine is as follows: 1. Water in the car's fuel tank can cause frequent stalling. Due to the presence of water, the tank may rust, corrode, or age. If there is moisture in the fuel system, it can lead to reduced engine power, increased fuel consumption, vehicle shaking, and difficulty starting in winter. Symptoms of water in the fuel tank include difficulty starting, engine backfiring, high idle speed, or insufficient power. 2. If water accidentally enters the fuel tank, the owner should stay calm, analyze the cause and extent of the water ingress. If the situation is mild, it can be resolved independently; if severe, professional repair at a specialized auto shop is recommended for better assurance. Since the fuel tank is the source of the car's power, any issues with it can make the vehicle difficult to operate.
Last time I dealt with this issue when repairing my car, water in the fuel tank is indeed harmful to the engine. Water is heavier than gasoline and settles at the bottom of the tank. When you start the car, the fuel pump draws the water into the engine. The engine is designed to burn gasoline, not water, so it may shake, stall, or have weak acceleration when running. Even worse, water can corrode the inside of the fuel tank, the fuel pump, and the injectors, causing rust or damage to parts. Especially in cold weather, water freezing can block the fuel line, making it harder to start. If water gets in, you need to address it immediately, such as draining the water, cleaning the tank, or using a desiccant to absorb moisture. If you continue driving, the problem may escalate to engine failure, requiring expensive repairs. Prevention is simple: always check the fuel cap seal when refueling, avoid parking in standing water after heavy rain, and choose reputable gas stations to avoid contaminated fuel to protect your car.
