Help!! Fuel Leak?

[dmr22]

I recently purchased a 2003 7.3 and the last two mornings I started the truck (20 degrees) and let it warm up there appears to be a puddle of diesel under the truck. It doesn't seem to do it when the temp outside warms up. I don't know for sure that it's diesel but it sure smells like it.

Help!!

[Rick323]

My truck is doing the same thing. It's my fuel drain o rings-seems pretty common. I ordered o ring from here Replacement O-rings for Ford Diesel Engines. I've read you can buy them a local auto stores like Napa.

[kylev90]

^^^ makes sense. Expansion and contraction of the o-ring from the temps. Sounds like an easy fix

[dmr22]

Any tips before I do I change them?

[Rick323]

See if this works http://www.dieselorings.com/docs/FuelDrain.pdf. I read you should disconect the battery, because there as some hot wires you have to disconnect-it's pretty tight in there, and put a piece of cloth down to catch the screws when they fall out, or have a magnet handi--I'll be doing this next week so I'll see.

[CHUCK]

I used a 1/4 inch rachet wrench with the torx bit in it, to get the screws out of the last one i did. Yea, its tight in there.

[CHUCK]

be sure to get Viton O rings. The low sulfer fuel eats the rubber ones.

[smith7.3]

get the valve also not just the o rings! Do it all at once and don't worry about it again. Half the time the valve is broke, and doesn't close all the way.

[dmr22]

Ordered the valve today with the viton rings. I will be installing it saturday. I hope I can get my monkey paws in there!

Thanks for the help everyone!!

[jerry clayton]

Just did mine today--got the IHC/Ford o ring kit #F81Z-9Co65-AA---$31.66 at the corner Ford dealership---at $3.39 per gallon those drips were expensive

To do all 5 orings you will need a 20 and a 25 torx 1/4 drive and ratchet---the one on the left side can be done 25 torx and about a foot long extension makes it easier, the ones on the drain valve and water in fuel sensor need the 20 torx and is real close quartered