Water-In-Fuel Sensor - 6.4L Diesel: Installation

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Vehicles with a damaged sensor

Install a new manifold cover seal and clean the seal mating surface.
Install the manifold cover and screws.
- Lubricate the manifold cover seal with clean motor oil just before installing the cover.
- Tighten to 5 Nm (44 lb-in).

All vehicles

NOTE: Make sure the water-in-fuel sensor hole is clean.

Lubricate the water-in-fuel sensor hole and water-in-fuel sensor seal with clean motor oil.

NOTE: The guides on the water-in-fuel sensor should be pointing downward.

Align the water-in-fuel sensor to the water-in-fuel sensor hole and insert the sensor until a click is heard or felt.

Fig 1: Locating Water-In-Fuel Sensor

Courtesy of FORD MOTOR CO.

If required, using a rubber mallet, gently tap the water-in-fuel sensor into place. Pull on the water-in-fuel sensor to verify that it is securely in place.
Install the fuel conditioning module. For additional information, refer to Fuel Conditioning Module - 6.4L Diesel .
Start the vehicle and idle for one minute while noting engine performance.
If engine is running rough, check for air leaks.
Shut the vehicle off and inspect for fuel leaks.