* Water doesn't burn: Diesel engines rely on the combustion of fuel to generate power. Water does not burn, and it will dilute the fuel, reducing its energy content. This leads to:
* Reduced engine performance: The engine will run poorly, lacking power and possibly stalling.
* Increased fuel consumption: You'll use more fuel to achieve the same power output.
* Incomplete combustion: The water can interfere with the combustion process, leading to soot buildup and increased emissions.
* Water can damage the engine:
* Corrosion: Water can corrode metal parts within the fuel system and engine, leading to premature wear and failure.
* Fuel filter blockage: Water can clog fuel filters, preventing fuel from reaching the engine.
* Hydraulic lock: In extreme cases, water can accumulate in the cylinders, creating a hydraulic lock that prevents the pistons from moving, potentially causing catastrophic engine damage.
Here's what can happen in different scenarios:
* Small amount of water: You might experience a rough idle, reduced power, and slightly increased emissions.
* Moderate amount of water: You'll likely experience more severe performance issues, and the engine may struggle to start or run.
* Large amount of water: You'll likely have major problems, including engine stalling, fuel filter clogging, and potentially catastrophic engine damage.
What to do if you suspect water in your diesel:
* Do not run the engine: Stop immediately if you suspect water in the fuel.
* Contact a mechanic: Have the fuel tank drained and inspected. The fuel system will need to be thoroughly flushed and cleaned.
* Consider a fuel additive: A fuel additive can help prevent water from settling in the tank and forming a layer.
In conclusion: Water in your diesel fuel is a major problem. It's best to avoid it entirely by using a reliable fuel source and taking precautions to prevent contamination. If you suspect you have water in your fuel, act quickly to prevent serious damage.