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Old 09-17-2022, 03:59 PM   #1
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2001 7.3 Leaking Plug

Can any one tell what this plug is and why it might be leaking.
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Old 09-17-2022, 06:09 PM   #2
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Might help if I provided a little more information. This is on the back of the engine block on the drivers side. Not dripping much, but it is landing on the junction of the up pipe and exhaust manifold.
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Old 09-17-2022, 06:19 PM   #3
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2001 7.3 Leaking Plug

Oil rail end drain plugs I believe, you can try tightening it a bit, otherwise might be the o rings are worn and need replacing.

https://deadheaddiesel.com/7-3-oil-rail-plug/
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Old 09-17-2022, 07:44 PM   #4
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REF, thanks. If I pull the plug to put in a new O ring will it leak a lot of oil? Do you use any type of "locktite" on it when reinstalling?
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Old 09-17-2022, 09:27 PM   #5
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REF, looking at the diagram on Deadhead Diesel, thinking it is a different plug. The one I have circled is lower than the one indicated in their drawing. The ones that's leaking on mine sits just above and to the left of the freeze plug
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Old 09-18-2022, 06:03 AM   #6
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Fuel or oil leaking?
If itís fuel, then it looks like itís the fuel rail banjo bolt, thereís 2 different styles, and thereís a replacement o-ring set. Browse the diesel sites for some tips on removal and proper draining.
Look at related products for o-ring set-
https://www.dieselorings.com/15-019-...anjo-bolt.html

https://www.riffraffdiesel.com/fuel-...-bolt-o-rings/
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Old 09-18-2022, 07:44 AM   #7
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REF, believe it is a fuel banjo bolt. Thanks for the help! Will let you know.
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Old 09-22-2022, 10:34 AM   #8
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If it's leaking then what is coming out from it? Diesel, coolant, and oil aren't that similar....
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Old 09-22-2022, 03:03 PM   #9
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Looks and smells ike diesel
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Old 09-22-2022, 03:32 PM   #10
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I'd pull the plug and catch the diesel in a can. See what you're dealing with and replace accordingly. This assumes you're going it alone and don't get feedback here on if there's an oring, etc.
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