1. IMMEDIATELY STOP ADDING FUEL: Do not add any more fuel to the tank. Adding more fuel will just dilute the problem and potentially make it harder to remove the water.
2. DO NOT START THE ENGINE: Attempting to start the engine with water in the fuel system can cause severe damage, including:
* Hydrolock: Water is incompressible, and if enough gets into the cylinders, it can cause catastrophic engine failure.
* Corrosion: Water promotes rust and corrosion in the fuel system components.
* Fuel pump failure: Water can damage the fuel pump.
* Injector damage: Water can clog injectors or cause them to malfunction.
3. Drain the Water: If possible, safely drain some fuel from the lowest point of the fuel tank. This will help remove at least some of the water. You'll likely need to use a siphon pump or a drain valve if your tank has one. Be cautious: diesel fuel is flammable.
4. Assess the Amount of Water: The amount of water will determine the next steps. A small amount might be handled differently than a significant contamination.
5. Use a Fuel Water Separator: This is crucial. If your truck doesn't have one already, it's a worthwhile investment. Even if it does, ensure its working correctly. These devices are designed to separate water from the diesel fuel.
6. Add a Fuel System Water Treatment: Many additives are available to help absorb and remove water from the fuel system. Follow the instructions on the product carefully. This is not a replacement for proper draining and using a fuel water separator.
7. Consider Professional Help: If you're unsure about any of these steps or the contamination is substantial, contact a qualified mechanic. They can properly drain the tank, flush the fuel system, and check for any damage. This is particularly important if you've already attempted to run the engine.
8. Prevention: The best approach is prevention.
* Refuel at reputable stations: Choose well-maintained gas stations that minimize the risk of water contamination.
* Regular fuel filter changes: Replace your fuel filter regularly according to the manufacturer's recommendations. This will help prevent water and other contaminants from reaching the engine.
* Fuel tank breather: Ensure your fuel tank breather is clean and unobstructed. A clogged breather can increase the risk of condensation inside the tank.
* Regular maintenance: Routine maintenance of your fuel system will significantly reduce the chances of this problem.
Ignoring water in your diesel fuel tank can lead to costly repairs or even a complete engine replacement. Addressing the issue promptly is crucial to protecting your truck and your investment.
