CAC Hose Original/Replacement pictures

DZL_LOU · **Posted:** Thu Oct 19, 2006 7:39 am

Having 30,000 miles on the CRD prompted me to take a close look again at the CAC
hoses. Since I was not running a Provent until 29K, my CAC hose would “sweat” oil on the outside. Fearing a rip failure, I decided to replace the CAC hose from the compressor side of the turbo to the intercooler.

The original and replacement CAC had some differences. Most noteably, was the re-inforced ends of the hoses on the replacement along with no orange color inside the replacement CAC.

Original CAC top. Replacement Bottom. (Forgot to take packing slip off replacement for picture)

Original CAC left. Replacement right

litton · **Posted:** Thu Oct 19, 2006 9:33 am

Good pics. The original sure looks good, I was expecting to see a solid coating of oil based on what I've been reading. Did it clean up with the provent or has it always been clean.

DZL_LOU · **Posted:** Thu Oct 19, 2006 9:46 am

litton wrote:

Good pics. The original sure looks good, I was expecting to see a solid coating of oil based on what I've been reading. Did it clean up with the provent or has it always been clean.

I just installed the Provent in the last 1,000 miles and I have had very little trace of oil at all.
The CAC hose prior to the Provent has always been as it is in the picture. I took off the old CAC hose every oil change to inspect it. Each time it looked as shown in the picture, only about 1~2 tsp. of oil total in the CAC

Funny thing is that the old CAC hose prior to installing the Provent would "bead sweat" oil through the hose itself, almost as if it was purging the oil out of the hose under the turbo pressure.

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

Good looking pictures. My CAC hoses don't look that good with a Provent. If they were that clean I wouldn't have even put one in. Mine turn solid black without a provent. Yours must have good turbo seals.

BIGPAPACRD · **Joined:** Wed May 10, 2006 11:25 pm **Posts:** 29

My hose does the exact same thing!!!!! I have 25,000 mi and going to be taking it in the dealer very soon. I have oil dripping out of my ccv and also dripping badly from where the air filter boot connects to the turbo. Any thoughts??

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

Yes,

Clean the CAC hoses every couple of thousand miles, and install some kind of auxillary ccv. Once I installed my Provent, that stopped a lot of the blowby. The oil that shows up now is from the turbo seals. Before I installed the Provent, the hoses were far worse at 2500 miles than dzl_lou's at 29000. Since I changed out the airbox, I have not had another episode of the turbo blowing massive amounts of oil past the seals. While I think that may have stopped that problem, I've learned to wait for long periods of time before deciding a problem is fixed on a CRD.

YMMV

MACKJ · **Posted:** Thu Oct 19, 2006 10:57 pm

Ranger1 wrote:

Yes,

... Before I installed the Provent, the hoses were far worse at 2500 miles than dzl_lou's at 29000. Since I changed out the airbox, I have not had another episode of the turbo blowing massive amounts of oil past the seals...

Ranger1
What do you mean by changing out the airbox? Is this replacing it with the V6 version or other mods?

RFCRD · **Posted:** Thu Oct 19, 2006 11:06 pm

BIGPAPACRD wrote:

My hose does the exact same thing!!!!! I have 25,000 mi and going to be taking it in the dealer very soon. I have oil dripping out of my ccv and also dripping badly from where the air filter boot connects to the turbo. Any thoughts??

Yes...CCV oil vapor and oil passed from the turbo shaft seals get blown into the CAC hose where most of it condenses at the first bend in the hose. When the engine is off, it backdrains down the hose into the turbo housing and collects a the lowest point which is the intake boot. This eventually leaks out the bottom.

alljeep · **Posted:** Fri Oct 20, 2006 7:43 am

DZL_LOU wrote:

Funny thing is that the old CAC hose prior to installing the Provent would "bead sweat" oil through the hose itself, almost as if it was purging the oil out of the hose under the turbo pressure.

Mine used to "bead sweat" oil just as you described, but dried up after approximately 12,000 miles. I'm now testing the EHM and have about 300 "around town" miles on this test and the clear hose is clean as can be, not like oldnavy's hose in the alphabet soup sticky.

I'm wondering if you and I have "good units" in that they are keeping themselves more oil free than others. One thing I do is change the air filter every 6k miles with the oil change.

DZL_LOU · **Posted:** Fri Oct 20, 2006 8:29 am

alljeep wrote:

DZL_LOU wrote:

Funny thing is that the old CAC hose prior to installing the Provent would "bead sweat" oil through the hose itself, almost as if it was purging the oil out of the hose under the turbo pressure.

Mine used to "bead sweat" oil just as you described, but dried up after approximately 12,000 miles. I'm now testing the EHM and have about 300 "around town" miles on this test and the clear hose is clean as can be, not like oldnavy's hose in the alphabet soup sticky.

I'm wondering if you and I have "good units" in that they are keeping themselves more oil free than others. One thing I do is change the air filter every 6k miles with the oil change.

Yes, I do the air filter change every 6K~8K as well. But an interesting thought just crossed my mind. What if there are two separate batches of turbos from two different vendors on the CRD's?
Just a wild thought.

I'm still puzzled why some Turbo's will leak through the seals and some will not. RANGER1 is one person that has eliminated the CCV and had oil through the Turbo seals.

When I pulled my CAC I cross check the Turbo numbers and I know mine is a Garrett Turbo

RFCRD · **Posted:** Fri Oct 20, 2006 8:52 am

DZL_LOU wrote:

alljeep wrote:

DZL_LOU wrote:

Funny thing is that the old CAC hose prior to installing the Provent would "bead sweat" oil through the hose itself, almost as if it was purging the oil out of the hose under the turbo pressure.

Mine used to "bead sweat" oil just as you described, but dried up after approximately 12,000 miles. I'm now testing the EHM and have about 300 "around town" miles on this test and the clear hose is clean as can be, not like oldnavy's hose in the alphabet soup sticky.

I'm wondering if you and I have "good units" in that they are keeping themselves more oil free than others. One thing I do is change the air filter every 6k miles with the oil change.

Yes, I do the air filter change every 6K~8K as well. But an interesting thought just crossed my mind. What if there are two separate batches of turbos from two different vendors on the CRD's?
Just a wild thought.

I'm still puzzled why some Turbo's will leak through the seals and some will not. RANGER1 is one person that has eliminated the CCV and had oil through the Turbo seals.

When I pulled my CAC I cross check the Turbo numbers and I know mine is a Garrett Turbo

Mine is another leaker and I have eliminated the other sources too. Just not as bad as it was 6-8 months ago. The hose "sweats oil" but it is contained to the first 4-6 inches. The only other variable I am stuck with is the 0W40 motor oil. Another 1000 miles and DC's oil consumption test will be done and I can dump that stuff for Rotella. Have accepted the fact that cleaning up the loose oil will be part of the normal maintenance ritual when the oil gets changed.

Find it more than coincidence that the new hoses are lined with black material (not red). Makes it more difficult to photograph the damage for the lawyer.

DZL_LOU · **Posted:** Fri Oct 20, 2006 9:44 am

RFCRD wrote:

Find it more than coincidence that the new hoses are lined with black material (not red). Makes it more difficult to photograph the damage for the lawyer.

There is a brilliant green inert tracer dye that one can put in hydraulic fluid to check for leaks. I'm going to check if that also works for motor oil. If it does, we can pooh pooh the attorneys.

RFCRD · **Posted:** Fri Oct 20, 2006 10:02 am

DZL_LOU wrote:

RFCRD wrote:

Find it more than coincidence that the new hoses are lined with black material (not red). Makes it more difficult to photograph the damage for the lawyer.

There is a brilliant green inert tracer dye that one can put in hydraulic fluid to check for leaks. I'm going to check if that also works for motor oil. If it does, we can pooh pooh the attorneys.

That will be a tough one to pull-off. Used CRD oil can be re-cycled as printer ink.

Jeger · **Posted:** Fri Oct 20, 2006 11:30 am

http://www.sjdiscounttools.com/tratp34000601.html

I think it will work and I think you will need a black light for this stuff though. My question...can it do any harm to the engine?

RFCRD · **Posted:** Fri Oct 20, 2006 4:44 pm

Jeger wrote:

http://www.sjdiscounttools.com/tratp34000601.html

I think it will work and I think you will need a black light for this stuff though. My question...can it do any harm to the engine?

I'm not sure if it will do any good. The last time I brought up the subject of oil passing the turbo seals, DC told me "so what." They are convinced this is completely normal and couldn't can care less about CAC contamination. Unless it is consuming more that 1 qt/1000 miles, they will not authorize repair action. That is how I got to the place I'm at now, 5000 miles into an oil consumption test with their 0W40 oil. I've used under 1/2 qt over that time, some of it went into the CAC hoses and @ 1/2 cup is in the Provent drain bottle.

BlackLibertyCRD · **Posted:** Fri Oct 20, 2006 7:15 pm

RFCRD wrote:

That will be a tough one to pull-off. Used CRD oil can be re-cycled as printer ink.

marauderer · **Posted:** Sun Oct 22, 2006 6:58 am

Ranger1 wrote:

Since I changed out the airbox, I have not had another episode of the turbo blowing massive amounts of oil past the seals. While I think that may have stopped that problem, I've learned to wait for long periods of time before deciding a problem is fixed on a CRD. YMMV

Ranger1, did you do a post on your airbox? I am trying to find in search and it isn't showing anything. Please post link if there is post if not Pictures please.

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=9907&postdays=0&postorder=asc&start=60&sid=391676c4bcfbd87312d3dd83ead58dd9

CAC Hose Original/Replacement pictures

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