MERCURY MARINE 90HP FOURSTROKE EFI Water In Fuel Alarm
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
92%
CONF
|
Water Separating Fuel Filter
Marine fuel systems often undergo phase separation where ethanol-blended fuel absorbs atmospheric moisture, leading to a water-rich layer at the bottom of the fuel filter. The WIF sensor detects this conductive layer and triggers the alarm. Replacing the filter element removes the accumulated water and restores the dielectric environment required for the sensor to remain in a 'normal' state.
|
|
|
8%
CONF
|
Secondary Circuit / Wiring Check
Inspect wiring harness.
|
DIY Repair Guide
Watch exactly how to replace the Water Separating Fuel Filter.
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