Uppipe Leak Help
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Senior User
Joined: Mar 2007
Posts: 473
Likes: 3
From: Issaquah, WA
Uppipe Leak Help
Hello, new to the forum, new to the 7.3, having a good time with it. Been reading the forum and working through the truck; otherwise stock 2001 w/110k mi. Fill-filter-tighten-check, you folks know the drill (it's pretty much your drill after all).
In chasing what appeared to be "weaker than it ought to be boost" I found an exhaust leak at the top of the drivers side up pipe at the connection to the turbo inlet manifold. All else, both sides looks tight.
The question is can I replace that u-pipe doughnut w/o having to pull the turbo, or disconnect the entire u-pipe?
Thanks in advance for the help.
-Mike
In chasing what appeared to be "weaker than it ought to be boost" I found an exhaust leak at the top of the drivers side up pipe at the connection to the turbo inlet manifold. All else, both sides looks tight.
The question is can I replace that u-pipe doughnut w/o having to pull the turbo, or disconnect the entire u-pipe?
Thanks in advance for the help.
-Mike
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Originally Posted by MR5x5
Hello, new to the forum, new to the 7.3, having a good time with it. Been reading the forum and working through the truck; otherwise stock 2001 w/110k mi. Fill-filter-tighten-check, you folks know the drill (it's pretty much your drill after all).
In chasing what appeared to be "weaker than it ought to be boost" I found an exhaust leak at the top of the drivers side up pipe at the connection to the turbo inlet manifold. All else, both sides looks tight.
The question is can I replace that u-pipe doughnut w/o having to pull the turbo, or disconnect the entire u-pipe?
Thanks in advance for the help.
-Mike
In chasing what appeared to be "weaker than it ought to be boost" I found an exhaust leak at the top of the drivers side up pipe at the connection to the turbo inlet manifold. All else, both sides looks tight.
The question is can I replace that u-pipe doughnut w/o having to pull the turbo, or disconnect the entire u-pipe?
Thanks in advance for the help.
-Mike
The answer to your question is no. IMO the easiest way to replace that donut is to remove the up-pipes themselves. You may want to have a new replacement set handy to install as there will be a deep groove worn into the pipe where the gasket made contact.
The hardest part of the whole job is gaining access to the top bolts, especially on the passenger side.
Good luck and let us know how it goes.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
On second thought, you could install new gaskets in there, but you would have to cut them to be able to wrap them around the pipe, and then retighten the shoulder. That would be IMO a poor repair as that would leave room for exhaust to pass through the cut and begin to burn the gasket away. It would only be good for a temporary repair and then you would be faced with the same situation soon.
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Senior User
Joined: Mar 2007
Posts: 473
Likes: 3
From: Issaquah, WA
Thanks Kwikk (hello from Issaquah),
Repeat after me; I hate working on exhaust, I hate working on exhaust...
Why does replacing the entire u-pipe sound so much more painful than pulling the turbo... Looks like the turbo needs to come out to get to the top of the passenger side u-pipe anyway?? How far into the turbo inlet do the u-pipes go? If it is very far, and you attack the problem from the top, I'm assuming that both u-pipe tops will need to be disconnected in order to get the required travel out of the turbo inlet? Liquid wrench, prayer, and snapped bolts... Quite possibly a new turbo inlet as well I'm afraid.
The deep grove you refer to: I'm assuming you are talking about the manifold end of the u-pipe?
-Mike
Repeat after me; I hate working on exhaust, I hate working on exhaust...
Why does replacing the entire u-pipe sound so much more painful than pulling the turbo... Looks like the turbo needs to come out to get to the top of the passenger side u-pipe anyway?? How far into the turbo inlet do the u-pipes go? If it is very far, and you attack the problem from the top, I'm assuming that both u-pipe tops will need to be disconnected in order to get the required travel out of the turbo inlet? Liquid wrench, prayer, and snapped bolts... Quite possibly a new turbo inlet as well I'm afraid.
The deep grove you refer to: I'm assuming you are talking about the manifold end of the u-pipe?
-Mike
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Originally Posted by MR5x5
Thanks Kwikk (hello from Issaquah),
Repeat after me; I hate working on exhaust, I hate working on exhaust...
Why does replacing the entire u-pipe sound so much more painful than pulling the turbo... Looks like the turbo needs to come out to get to the top of the passenger side u-pipe anyway?? How far into the turbo inlet do the u-pipes go? If it is very far, and you attack the problem from the top, I'm assuming that both u-pipe tops will need to be disconnected in order to get the required travel out of the turbo inlet? Liquid wrench, prayer, and snapped bolts... Quite possibly a new turbo inlet as well I'm afraid.
The deep grove you refer to: I'm assuming you are talking about the manifold end of the u-pipe?
-Mike
Repeat after me; I hate working on exhaust, I hate working on exhaust...
Why does replacing the entire u-pipe sound so much more painful than pulling the turbo... Looks like the turbo needs to come out to get to the top of the passenger side u-pipe anyway?? How far into the turbo inlet do the u-pipes go? If it is very far, and you attack the problem from the top, I'm assuming that both u-pipe tops will need to be disconnected in order to get the required travel out of the turbo inlet? Liquid wrench, prayer, and snapped bolts... Quite possibly a new turbo inlet as well I'm afraid.
The deep grove you refer to: I'm assuming you are talking about the manifold end of the u-pipe?
-Mike
The best penetrating oil that I can find in this area is called Free-all. I blows Liquid wrench, wd -40 right out of the water.
If you cannot find any call me at work or stop by, info is in my profile and I will get you a can of it. You can order it from Interstate battery if you need to. Or stop by at a repair shop on your side and see if they can get you some. It's the only stuff to use IMO.
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