Crank no start and water in fuel light on?

Tiny
MATT_307
  • MEMBER
  • 2001 FORD EXCURSION
  • 7.3L
  • V10
  • TURBO
  • 4WD
  • AUTOMATIC
  • 280,000 MILES
My water in fuel light comes on in the morning or when it's cold and will crank but no start. I've drained the water fuel separator multiple times but it keeps occurring.
Tuesday, December 13th, 2022 AT 9:50 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 POSTS
It sounds like the sensor or filter is bad causing the engine not to start. Here is some information on the sensor operation and the location on how to change it out. I would change the filter out as well.

Water in fuel

During refueling, it is possible for water-contaminated diesel fuel to be pumped into your tank. Your vehicle fuel system is equipped with a fuel

filter/water separator to remove water from the fuel The Water in Fuel light will illuminate when the ignition light is turned to START (as part of the light function check) and when the FCM/HFCM has a significant quantity of water in it.

If the light illuminates when tire engine is running stop the vehicle as soon as safely possible, shut off the engine, then drain the FCM/HFCM. Refer draining the FCM/HFCM and changing the fuel filter. See: Fuel Filter Allowing water to stay in the system could result in extensive damage to, or failure of, the fuel injection system.

WARNING: Do not drain the water separator while the engine is running. Fuel may ignite if the separator is drained while the engine is running, or the vehicle is moving.

Possible Causes:

NOTE: Air can enter the fuel system at any point where there is suction in the fuel system.

- Fuel pickup in the fuel tank.
- Fuel supply line entering the fuel module from the fuel tank.
- Fuel return line entering the fuel module from the engine.

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.
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Thursday, December 15th, 2022 AT 10:54 AM

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