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Turbo Oil Seep
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=9350		 Page 1 of 1
Author:  TDICRD58 [ Thu Jun 08, 2006 8:12 pm ]
Post subject:  Turbo Oil Seep
Guys,
I just noticed tonight that I have oil seeping out of the bottom of the inlet side of the turbo and the oil is following the outside of the lubrication tube and is accumulating on the engine block.
It is not dripping on the ground YET but the area around the engine oil filter is showing the accumulation.
10K miles and runs great. I do like to develop a little turbo boost every now and then :D
Is this a common sign of the CCV blow-by problem? Any recommendations?
Thought I would ask before I pulled intercooler tubes or took it to the dealer.
My Jetta TDI has 60K and has never done this.

Thanks!
Author:  TDICRD58 [ Thu Jun 08, 2006 9:46 pm ]
Post subject: 
Wanted to add a few notes in case someone else has seen a similar condition:

1) Pulled air to air intercooler to turbo hose at intercooler becuase it is easy to access. Inside of hose is black with greasy buildup. This hose is dyed red internally at the factory but you see no red - looks like oil to air intercooler :evil:

2) this same greasy black stuff is what appears to be oozing out of the bootom of the inlet side of the turbo - is the hole at the bottom of the inlet side of the turbo vane a weep hole?

Anybody else seen this oil ooze?

I can live with a little grease as long as long as the little mill runs good. I have been around diesels all of my life and they run best when they are well maintained and then thrashed on a regular basis :!:
Author:  RFCRD [ Thu Jun 08, 2006 10:53 pm ]
Post subject: 
You want to check a few things very soon. I hope you are mechanically inclined and don't mind getting greasy.
1). Oil return line comes out of the bottom of the turbo, goes into the block. Read where this is pressed into the motor block into a rubber seal. This can come loose and leak oil.
2). More likely this oil is pooling in the bottom of the air intake snorkle (goes from the air filter box to the front face/inlet of the turbo). This will leak out through the hose clamp seal where the rubber meets the face of the turbo and run downhill from there. The source of the oil here would be the CCV hose.
3) The next possible source of the oil inside the CAC hose (yes, it should be red inside) is through the turbo bearing seals. Start reading through the other threads in the forum, plenty of discussion on the subject.

Save yourself a lot of time and aggrivation, remove the CAC hose and that air intake snorkle at the same time. Clean both items, a strong degreaser or ether (starting fluid) works well to cut the sludge. You may want to remove the air filter box (simply pulls out of rubber mounts) to get more room to work. Plan on replacing the air filter element if you have any kind of mileage on it.

And the answer to the $100 question: NO, your dealer won't do this under warranty. Will tell you it's normal.
Author:  TDICRD58 [ Fri Jun 09, 2006 9:25 pm ]
Post subject: 
Thank you RFCRD! You were exactly right. Both CAC hoses were filthy and the oil seepage around the turbo was from the CAC hose going to the intercooler. Tad loose. Bottom line - the CCV valve was oiling the system and the EGR is carborizing it.

I cleaned up the mess and ordered 2 Mann oil seperators. One for the CRD and one for the TDI. The folks at the distributor in New Orleans said both vehicles are good customers.

My opinion is the VW has a much better CCV design for handling the blow by (VW MUCH cleaner at 60K than CRD at 10K) , but my VW dealer did tell me at about 100K he typically has to pull the intake manifold, so I feel the Mann seperators are a good investment vs. the labor to rip the intake system & turbo apart.

The Mann distributor also says that their primary customers are Cat and Cummings engines and that this is a common maintenance problem with ALL emissionized diesels. Oh well at least I don't have to deal with the exhaust particle traps that are the rage for 2008 emissions levels.

I travel to Europe one week a month and we could learn from them with their high diesel install rate and less problems thanks to no EPA or CARB. Their focus is reducing greenhouse gasses and not NOX, which means less EGR action, but that's another story in itself.

This is a great website - good solid technical information!
Author:  RFCRD [ Fri Jun 09, 2006 9:52 pm ]
Post subject: 
TDICRD58 wrote:
Thank you RFCRD! You were exactly right. Both CAC hoses were filthy and the oil seepage around the turbo was from the CAC hose going to the intercooler. Tad loose. Bottom line - the CCV valve was oiling the system and the EGR is carborizing it.

I cleaned up the mess and ordered 2 Mann oil seperators. One for the CRD and one for the TDI. The folks at the distributor in New Orleans said both vehicles are good customers.

My opinion is the VW has a much better CCV design for handling the blow by (VW MUCH cleaner at 60K than CRD at 10K) , but my VW dealer did tell me at about 100K he typically has to pull the intake manifold, so I feel the Mann seperators are a good investment vs. the labor to rip the intake system & turbo apart.

The Mann distributor also says that their primary customers are Cat and Cummings engines and that this is a common maintenance problem with ALL emissionized diesels. Oh well at least I don't have to deal with the exhaust particle traps that are the rage for 2008 emissions levels.

I travel to Europe one week a month and we could learn from them with their high diesel install rate and less problems thanks to no EPA or CARB. Their focus is reducing greenhouse gasses and not NOX, which means less EGR action, but that's another story in itself.

This is a great website - good solid technical information!

You will like the Provent, very effective on my CRD. Should add that you should watch for one more thing related to CAC oiling: Have not yet proven this but I believe the air filter is prone to rain water contamination causing a temporary airflow constriction. This constriction causes the turbo to pass oil (oil sucked through the seals into the CAC) until the air filter element dries out. My CAC oil contamination appears to happen driving on the expressway in the rain.
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