What Should You Do if There Is Water in Your Marine Diesel Fuel? #
Water contamination in marine diesel fuel should be addressed promptly.
Diesel fuel systems contain precision components that depend on clean fuel for reliable operation and lubrication.
Modern common-rail systems can be particularly sensitive to contamination.
How Does Water Get Into Marine Diesel Fuel? #
Possible sources include:
- Condensation
- Contaminated fuel deliveries
- Leaking deck fills
- Damaged fuel caps
- Tank vent problems
- Water intrusion from other sources
Small amounts of moisture can accumulate gradually, while other contamination events may introduce a significant amount of water at once.
Why Water Is Harmful #
Water contamination can contribute to:
- Corrosion
- Injector damage
- High-pressure pump damage
- Microbial growth
- Filter restriction
- Hard starting
- Loss of power
- Engine shutdown
Fuel/water separators are designed to help protect the engine, but repeated accumulation should not simply be ignored.
Look Beyond the Fuel Separator #
If water repeatedly appears in the separator, the larger question is where the water is coming from.
Replacing filters or draining the separator may provide temporary relief without correcting the underlying contamination problem.
Fuel quality, tanks, deck fills and other possible entry points may need to be inspected.
All Tech Diesel provides Marine Diesel Fuel System diagnostics, contamination evaluation and fuel-system service.
Found Water in Your Diesel Fuel? #
We can help evaluate the condition of the fuel system and determine the appropriate next step.
