Diesel Leak
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New User
Joined: May 2007
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Diesel Leak
I have a 2001 Excursion Limited 7.3L, and it has about 140,000 miles on it and is leaking diesel from right under the Powerstroke badge in the engine compartment, and I have no I dea where it is coming from. The only work we have done to it is replacing the water pump, and the vaccum pump (I think).I don't know Diesels very wellbut I do know Muscle cars It looks like it is coming from the Intake, like where the carburetor should go. Any Ideas??
Post Fiend
Joined: Jun 2004
Posts: 9,293
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From: Parker, CO
Under the Powerstroke cover sits your fuel bowl with the fuel filter inside. The most common leak point is the drain valve o-rings. Look around there with the truck running for your source of the fuel leak.
Hotshot
Joined: Jan 2002
Posts: 17,988
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From: La La Land
Those o-rings go bad from time-to-time. Replacement o-rings are a LOT cheaper from a guy on ebay than from Ford.
You can also get them from Grainger or McMaster-Carr. See:
http://www.7point3.com/OringChart.aspx
Last time I needed to replace them, I got them at Home Depot, in the plumbing section, but those were made of Buna, and is the wrong material to hold up long-term to diesel fuel. They've been in there for only a couple of years so far, and I now have the correct ones in my center console. ;-)))
Pop
You can also get them from Grainger or McMaster-Carr. See:
http://www.7point3.com/OringChart.aspx
Last time I needed to replace them, I got them at Home Depot, in the plumbing section, but those were made of Buna, and is the wrong material to hold up long-term to diesel fuel. They've been in there for only a couple of years so far, and I now have the correct ones in my center console. ;-)))
Pop
Last edited by SpringerPop; May 29, 2007 at 05:36 PM.
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New problem, my stepdad tells me that today when he was driving around the truck would just drop to idle and not respond to the throttle at all, a little bit later it would pick back up to normal, he also says that the motor and tranny felt like i was pulsating.... any ideas?
Hotshot
Joined: Jan 2002
Posts: 17,988
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From: La La Land
The throttle is "drive-by-wire". There is no mechanical linkage. I suspect that it's an intermittent throttle pedal position sensor. It's going bad. It's at the top of the pedal assembly at the driver's foot. It consists of the idle validation switch and the potentiometer.
If you're handy with a DVM, you can check it. Sometimes you can clean them with contact cleaner and get a few thousand more miles out of them. Could be the potentiometer, could be the switch.
It's easiest to work on by taking off the three retaining nuts and pulling out the entire assembly.
Pop
If you're handy with a DVM, you can check it. Sometimes you can clean them with contact cleaner and get a few thousand more miles out of them. Could be the potentiometer, could be the switch.
It's easiest to work on by taking off the three retaining nuts and pulling out the entire assembly.
Pop
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Originally Posted by SpringerPop
The throttle is "drive-by-wire". There is no mechanical linkage. I suspect that it's an intermittent throttle pedal position sensor. It's going bad. It's at the top of the pedal assembly at the driver's foot. It consists of the idle validation switch and the potentiometer.
If you're handy with a DVM, you can check it. Sometimes you can clean them with contact cleaner and get a few thousand more miles out of them. Could be the potentiometer, could be the switch.
It's easiest to work on by taking off the three retaining nuts and pulling out the entire assembly.
Pop
If you're handy with a DVM, you can check it. Sometimes you can clean them with contact cleaner and get a few thousand more miles out of them. Could be the potentiometer, could be the switch.
It's easiest to work on by taking off the three retaining nuts and pulling out the entire assembly.
Pop
