97 7.3 fuel leak in valley - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 09-13-2013, 03:58 AM Thread Starter
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97 7.3 fuel leak in valley

Hi Everyone,
got a 97 f350 7.3 the other day started to smell a little diesel fuel thought maybe a leaky fuel tank. drove it around and came out to find a big ole puddle of diesel fuel under it.....popped the hood and the engine valley behind the fuel filter was full of fuel and dripping down the back side of the engine near the starter. Anyone know of a common leak on the top of these engines was thinking maybe its the fuel/water seperator drain valve o rings gone bad? Am going to mop up the fuel again and see if i can tell where its leaking but any pointers in the right direction would be a big help. Beleive it was already slowly leaking and finally just gave out.
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post #2 of 12 Old 09-13-2013, 05:31 AM
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Could be the weep hole in the fuel pump, o-rings in fuel bowl, or the rubber hoses.

-Tyler

1994.5
Efuel, Valair 500hp, D60, Hydra w/PHP tunes


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post #3 of 12 Old 09-13-2013, 09:37 AM Thread Starter
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thanks i'm gonna get a good look in there once the fuel is mopped up to hopefully see where its dripping from i'm thinking its either the o rings in the fuel bowl or the fuel drain valve on the side of it....hopefully i'm right and its an easy fix cuz the fuel was dripping onto the ground pretty good was forced to park it until fixed.
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post #4 of 12 Old 09-13-2013, 09:43 AM
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Buy the oring kit from dieselorings as well as the replacement hoses. I did mine a month or so ago and found the blue hoses were cracked and starting to rot. They were terrible. Do yourself a
Favor and just start new. Cost about $35 for me.


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post #5 of 12 Old 09-13-2013, 05:44 PM
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If you dont know this...if anything leaks into the valley enough it will drain out the back in the same spot you described. Fuel, oil, whatever.


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-Tyler

1994.5
Efuel, Valair 500hp, D60, Hydra w/PHP tunes


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post #6 of 12 Old 09-15-2013, 04:14 AM Thread Starter
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finally got a good look in there and it ended up being a pin hole in the side of the fuel filter housing....has anyone ever had this where it just pitted or rotted out? when the truck is running its basically a stream of diesel flying out of the hole about half way down on the side. not the o rings or anything the actual housing itself.
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post #7 of 12 Old 09-15-2013, 06:59 AM
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Pull the housing, its not that hard, while it is out replace all of the rubber hoses, and to plug the hole, if it is a small pinhole you might get away with drilling, tapping, and put in a short screw with sealant or a sealing type washer on the screw.
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post #8 of 12 Old 09-15-2013, 07:19 AM
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A leather washer on a screw should work. I sealed a small hole in a gas tank one time using that, and it held up for as long as I owned the truck. Good luck. I cut a small piece off a pair of old boots I had laying around.
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post #9 of 12 Old 09-15-2013, 10:29 AM Thread Starter
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its a pretty decent hole i'd say tip of a pencil housing seems to come out with 2 bolts in the back toward the turbo and then disconnect fuel lines etc.
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post #10 of 12 Old 09-16-2013, 03:34 AM Thread Starter
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does anyone know of a good place online to buy the replacement fuel filter housing assembly as well as the connector hoses for a good price.....per usual the ford dealer around here is up over $450. any recommendations would be great.
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