water in fuel light - Diesel Forum

markd3682 · 05-20-2005, 12:48 PM

A friend owns a 2003 6.0. He recently changed the fuel filter and right after that the "water in fuel light" came on and has been on since. He has tried 4-5 times draining the bowl and the light goes off for a few minutes but then goes back on. He wants to know if he did not put something back correctly or if someone can tell him what to do to get the light to go off.

Thanks

Mark

**teamroper60** · 05-20-2005, 12:58 PM

There was a TSB on this a while back.

2003-2004 6.0 Water In Fuel Lamp Illuminated:
Some trucks may exhibit a water in fuel lamp that continues to illuminate after draining the water separator. This may be due to sedimate build up in the water reservoir. Check the electrical connections at the fuel pump assembly. Replace the fuel manifold with part # 3C3Z-9B249-AB. TSB# 04-9-2.

POS · 05-21-2005, 09:03 AM

I met a customer on Tuesday who had this problem. He was draining the fuel filter under the hood, but not the seperator that's mounted on the frame rail.

The sensor for the light goes to the one on the frame rail. Has he drained that bowl?