What are CAC tubes
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Logistics Pro
Joined: Nov 2001
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From: Georgia
What are CAC tubes
What are CAC tubes? I had an oil leak through the flywheel cover. Still under warranty ($100 deductable). The dealership diagnosed CAC tubes leaking. Said they cleaned and resealed CAC tubes and cleaned the oil from the valley. I thought the common leak was some sort of turbo seal. Anyway, it's 2000 miles later and the leak is back.
Any one have any comments. I don't feel like taking it back to the dealership. If they wanted to fix it they would have done it the first time, right? I have a good shop and plenty of air and hand tools. But, I have zero experience with the diesel or the turbo. What is the level of difficulty of making the repair myself. Can I do it without a service manual? How about special tools?> I'll probably need a service manual eventually anyway so I'm not opposed to buying one but I am in a bit of a hurry. Ideas anyone????
Stan
Any one have any comments. I don't feel like taking it back to the dealership. If they wanted to fix it they would have done it the first time, right? I have a good shop and plenty of air and hand tools. But, I have zero experience with the diesel or the turbo. What is the level of difficulty of making the repair myself. Can I do it without a service manual? How about special tools?> I'll probably need a service manual eventually anyway so I'm not opposed to buying one but I am in a bit of a hurry. Ideas anyone????
Stan
Fleet Mechanic
Joined: Aug 2003
Posts: 1,782
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From: Phoenix, AZ
Seems that the Ford fix for "oil in the valley" is tightening up the orange intercooler boots to the tubes. Seldom is the fix.
Take a flashlight and look at the valley under the turbo to see if anything is running down the turbo pedestal or under the pedestal where it mates to the block. If so, it's the turbo "O" rings leaking and can be quite an undertaking. I do have instructions.
Or, their could be a leak at the high pressure oil pump. (under the plastic Powerstroke embossed cover)
Take a flashlight and look at the valley under the turbo to see if anything is running down the turbo pedestal or under the pedestal where it mates to the block. If so, it's the turbo "O" rings leaking and can be quite an undertaking. I do have instructions.
Or, their could be a leak at the high pressure oil pump. (under the plastic Powerstroke embossed cover)
FTE Leadership Emeritus
Joined: May 2001
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From: Cabot, Arkansas
Originally Posted by StanleyZ
What are CAC tubes? I had an oil leak through the flywheel cover. Still under warranty ($100 deductable). The dealership diagnosed CAC tubes leaking. Said they cleaned and resealed CAC tubes and cleaned the oil from the valley. I thought the common leak was some sort of turbo seal. Anyway, it's 2000 miles later and the leak is back.
Any one have any comments. I don't feel like taking it back to the dealership. If they wanted to fix it they would have done it the first time, right? I have a good shop and plenty of air and hand tools. But, I have zero experience with the diesel or the turbo. What is the level of difficulty of making the repair myself. Can I do it without a service manual? How about special tools?> I'll probably need a service manual eventually anyway so I'm not opposed to buying one but I am in a bit of a hurry. Ideas anyone????
Stan
Any one have any comments. I don't feel like taking it back to the dealership. If they wanted to fix it they would have done it the first time, right? I have a good shop and plenty of air and hand tools. But, I have zero experience with the diesel or the turbo. What is the level of difficulty of making the repair myself. Can I do it without a service manual? How about special tools?> I'll probably need a service manual eventually anyway so I'm not opposed to buying one but I am in a bit of a hurry. Ideas anyone????
Stan
The difficulty level for cleaning them is "extremely easy" and the only tools required are a 7/16" deep socket and a ratchet.
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Logistics Pro
Joined: Nov 2001
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From: Georgia
Cookie and all responders, thanks. I'm gonna climb up there and see what I can see. Cleaning up the mess sounds easy but futile. I'll probably go for a cleaning and inspection and a repair when I get back from Alaska. (Sept or so)
Hotshot
Joined: Nov 2006
Posts: 11,288
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From: North of Greenville
WOW... it's only been almost 11 years since the last post in this thread... until today!
The fix, at this point, is fairly commonly known as re-venting the doghouse vapors to an external separation device and then discharge the vapors to atmosphere. Some folks put take the vapors right back into the intake after capturing the condensed oil vapor in a catch can (which has a drain valve for dumping the captured oily condensate). I just let mine vent to the atmosphere right near the rear axle.
Search for "CCV Catch Can" and you'll find several approaches to this issue.
The fix, at this point, is fairly commonly known as re-venting the doghouse vapors to an external separation device and then discharge the vapors to atmosphere. Some folks put take the vapors right back into the intake after capturing the condensed oil vapor in a catch can (which has a drain valve for dumping the captured oily condensate). I just let mine vent to the atmosphere right near the rear axle.
Search for "CCV Catch Can" and you'll find several approaches to this issue.
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Elder User
Joined: Apr 2008
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WOW!! I started reading and was going to suggest he was in the wrong forum. It appears his fix for this was to trade it in on a 2014 6.7L ;-)
Correction...traded on a 2008, and then the 2014.
Correction...traded on a 2008, and then the 2014.
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