Fuel leak, 99 7.3, 85k miles. Not the drain valve!! - Ford Powerstroke Diesel Forum
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Old 06-26-2014, 07:13 PM
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Fuel leak, 99 7.3, 85k miles. Not the drain valve!!

My first post guys but Im in a pickle. I'm leaving on a 6 hour drive towing my Jeep to Kentucky in two days and my beloved 99 SD 7.3 decided to be cranky :-(

I'm leaking a good bit of fuel while running only at the front/center of the engine on the passenger side. Its not the drain valve, the valley is dry. There is very little fuel at the end of the drain tube and its not coming from there. I just changed the filter three days ago, it started leaking today.

I need this fixed fast and cheap(yeah I know)

TIA!

Jon

Edit; This is a early 99 with a production date of 4/99

Last edited by xjtrailrider; 06-26-2014 at 07:30 PM.
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Old 06-26-2014, 08:03 PM
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Check your filter cap and see if it's coming from there. Best I can say is start it up and start following lines. But the filter cap is easiest to get to.
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Old 06-26-2014, 08:22 PM
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Fuel lines going to the filter base?
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Old 06-26-2014, 08:52 PM
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Quote:
Originally Posted by sbluke55 View Post
Check your filter cap and see if it's coming from there. Best I can say is start it up and start following lines. But the filter cap is easiest to get to.
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Originally Posted by melmount View Post
Fuel lines going to the filter base?
There is no fuel in the valley of the engine. The cap, drain valve or the lines are NOT leaking, the HPOP is not leaking. Its coming from somewhere in the front or front middle of the right bank(pass side) I hear there is a fuel rail plug there somewhere behind the AC compressor bracket that the orings go bad on. How big of a deal is it to fix that?
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Old 06-27-2014, 01:22 AM
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Can you post a pic?
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Old 06-27-2014, 03:21 AM
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The fuel rail plug on top of the head is pipe thread and has no o-ring. There are end plugs on the fuel rail that use a banjo bolt with an o-ring. I believe you have to remove the accessory bracket to get to it if you find out that it's your leaker.
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Old 06-27-2014, 03:39 AM
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Originally Posted by DieselBreathDude View Post
Can you post a pic?
I will try, I'm heading out to the garage right now to tear into it

Quote:
Originally Posted by Pikachu View Post
The fuel rail plug on top of the head is pipe thread and has no o-ring. There are end plugs on the fuel rail that use a banjo bolt with an o-ring. I believe you have to remove the accessory bracket to get to it if you find out that it's your leaker.
Its at the front of the engine and near the motor mount. There is fuel all over the battery cable and all of the suspension/crossmember etc is soaked.
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Old 06-27-2014, 04:11 AM
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If it's leaking from the end plug and running down, it's probably being blown back onto the motor mount and everything else. I've never actually ran across one that was leaking, but I'm sure it can happen. The oil rail end plugs leak occasionally, and it's pretty much the same design.
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Old 06-27-2014, 04:23 AM
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Originally Posted by Pikachu View Post
If it's leaking from the end plug and running down, it's probably being blown back onto the motor mount and everything else. I've never actually ran across one that was leaking, but I'm sure it can happen. The oil rail end plugs leak occasionally, and it's pretty much the same design.

This is 100% fuel! too clear and thin to be Rotella 15-40! I'm digging in now. I had to move my trail rig out of the way to pull it in
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Old 06-27-2014, 05:06 AM
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I know you said it's fuel. I was just pointing out that the oil rail end plugs are the same design as the fuel rail end plugs.
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