The_Ocho
02-02-2014, 07:31 PM
Hello all. First off excuse me for the long post but I want to try to figure this out. Iv talked to a few people in different places about my problem but nothing seems to work out so now Im trying to get more minds and ideas going. I have a 07 2.0t, stage1 APR, Cone filter, GFB DV+. I just hit 90K miles and other than this problem everything is great. Basically any modifications I do to my PCV end up in oil being pushed out of my Camshaft Position sensor and leaking down the front of my engine onto the ground. Now I assume this is a result of their not being enough vacuum on the crank like their is with the stock PCV setup. I have tried multiple setups and everything but stock resulted in an oil leak of varying levels. Just to be clear I am 10000% sure its the camshaft position sensor leaking. I have had the front end apart to do my timing belt and made sure the crank and cam seals were good.
In an attempt to solve this oil leak I have done a few things. I first replaced the Oring on my original sensor. This did nothing. I next replaced the sensor as a whole again with a new o ring, then I placed a bead of RTV alround the base of the sensor to help seal, this bead was applied to clean surfaces and allowed to set up over night, and finally the only thing that worked and I did it between ever pcv set up to be sure it still worked was replace the stock pcv valve.
To prevent any confusion I will steal this picture from SHIRO's pcv thread. I will refer to ports by their number in this picture so we are all on the same page.
http://i955.photobucket.com/albums/ae31/ciprianpatulea/Audi%20A4%20B7/PCV%20System/PCVsystem_zps926b65ce.jpg
The first setup I tried. I bought a used IE pcv plate off the forum and planned on building my own catch can down the road but while I was waiting on the can I installed the plate. I dont have pictures of this setup but anyone with pcv knowledge should be able to imagine it
So It was an IE PCV plate with -8an fittings. I looped port 1-F and port 2. Essentially doing what the BSH pcv revamp plate does only externally. I also used a 034Motorsports plug for the intake port.
This set up resulted in a moderate oil leak enough to leave 3 square inches on the driveway over night. basically what was caught by the belly pan dripping off while running this setup is when I tried the new oring and then new sensor with no change in leak.
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0661_zps1311e78f.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0661_zps1311e78f.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0660_zps3b303dbb.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0660_zps3b303dbb.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0673_zps0e045365.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0673_zps0e045365.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0672_zps67e07e98.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0672_zps67e07e98.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0669_zpsff52e391.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0669_zpsff52e391.jpg.html)
I then went back to the stock PCV for a few weeks before trying set up two. This was using the same plate and plug but this time I used a Ebay catch can that I modified. the catch can had its inlet and outlet ports dilled out to 5/8ths and I used 1/2" copper pipe to make hose barbs. internally it had a wall down the middle seperating the intake and exhaust side, the intake had a tube extending till 2 inches off the bottom of the can with holes drilled in it. the exhaust side was filled with steel wool. I ran 5/8ths hose from the can to the pcv plate. The can did not have any restriction to flow and worked great other than the fact it left me with the same oil leak as before. I drained a few oz from the can when i removed it. In the middle of running this setup I changed my timing belt. While It was apart I completely cleaned everything and this is when I tried the bead of RTV to seal the Camshaft position sensor with no success.
Here are some examples of how my can looked internally, these aren't mine but other people on the net.
http://s22.postimg.org/3rn9mmfep/alumbaffinbodydeflectside.jpg
http://s22.postimg.org/5jpf90dj5/stainlessinbody.jpg
This is how it looked on the car
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0769_zps4f67da3d.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0769_zps4f67da3d.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/05c36948-7992-43c5-ab15-79ffad7e1b33_zps6b8ace7b.jpg (http://s233.photobucket.com/user/theocho1/media/05c36948-7992-43c5-ab15-79ffad7e1b33_zps6b8ace7b.jpg.html)
And the third setup I tried was VTA I tried this just for the troubleshooting aspect. I wanted to cover all my bases trying to figure this out. I blocked off port 1F and ran a vent from port 2 down to below the car. This setup resulted in a severe oil leak and I then installed the stock PCV valve and boxed up all my PCV junk and put it on the shelf.
so after trying VTA and having the leak get worse it kind of proved my suspicion that it was the lack of manifold vacuum under non boost conditions causing the leak, turbo vacuum when not boosting wasn't enough.
Fast forward a month or so to today. Working on the willys and not the car has provided a change of pace and now I'm ready to get back on the car again. Having $100 worth of parts I cant use sitting on the shelf doesn't sit right with me. So I made this thread so we can figure it out or I can give up and sell my PCV plate and plug. Id rather not do that as I want the oil and junk out of my intake and tubes.
So why cant I run catch can like everyone else? There are plenty of people on here running VTA with no problems.
Thank you in advance for the help
Alex
In an attempt to solve this oil leak I have done a few things. I first replaced the Oring on my original sensor. This did nothing. I next replaced the sensor as a whole again with a new o ring, then I placed a bead of RTV alround the base of the sensor to help seal, this bead was applied to clean surfaces and allowed to set up over night, and finally the only thing that worked and I did it between ever pcv set up to be sure it still worked was replace the stock pcv valve.
To prevent any confusion I will steal this picture from SHIRO's pcv thread. I will refer to ports by their number in this picture so we are all on the same page.
http://i955.photobucket.com/albums/ae31/ciprianpatulea/Audi%20A4%20B7/PCV%20System/PCVsystem_zps926b65ce.jpg
The first setup I tried. I bought a used IE pcv plate off the forum and planned on building my own catch can down the road but while I was waiting on the can I installed the plate. I dont have pictures of this setup but anyone with pcv knowledge should be able to imagine it
So It was an IE PCV plate with -8an fittings. I looped port 1-F and port 2. Essentially doing what the BSH pcv revamp plate does only externally. I also used a 034Motorsports plug for the intake port.
This set up resulted in a moderate oil leak enough to leave 3 square inches on the driveway over night. basically what was caught by the belly pan dripping off while running this setup is when I tried the new oring and then new sensor with no change in leak.
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0661_zps1311e78f.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0661_zps1311e78f.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0660_zps3b303dbb.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0660_zps3b303dbb.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0673_zps0e045365.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0673_zps0e045365.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0672_zps67e07e98.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0672_zps67e07e98.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0669_zpsff52e391.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0669_zpsff52e391.jpg.html)
I then went back to the stock PCV for a few weeks before trying set up two. This was using the same plate and plug but this time I used a Ebay catch can that I modified. the catch can had its inlet and outlet ports dilled out to 5/8ths and I used 1/2" copper pipe to make hose barbs. internally it had a wall down the middle seperating the intake and exhaust side, the intake had a tube extending till 2 inches off the bottom of the can with holes drilled in it. the exhaust side was filled with steel wool. I ran 5/8ths hose from the can to the pcv plate. The can did not have any restriction to flow and worked great other than the fact it left me with the same oil leak as before. I drained a few oz from the can when i removed it. In the middle of running this setup I changed my timing belt. While It was apart I completely cleaned everything and this is when I tried the bead of RTV to seal the Camshaft position sensor with no success.
Here are some examples of how my can looked internally, these aren't mine but other people on the net.
http://s22.postimg.org/3rn9mmfep/alumbaffinbodydeflectside.jpg
http://s22.postimg.org/5jpf90dj5/stainlessinbody.jpg
This is how it looked on the car
http://i233.photobucket.com/albums/ee173/theocho1/IMAG0769_zps4f67da3d.jpg (http://s233.photobucket.com/user/theocho1/media/IMAG0769_zps4f67da3d.jpg.html)
http://i233.photobucket.com/albums/ee173/theocho1/05c36948-7992-43c5-ab15-79ffad7e1b33_zps6b8ace7b.jpg (http://s233.photobucket.com/user/theocho1/media/05c36948-7992-43c5-ab15-79ffad7e1b33_zps6b8ace7b.jpg.html)
And the third setup I tried was VTA I tried this just for the troubleshooting aspect. I wanted to cover all my bases trying to figure this out. I blocked off port 1F and ran a vent from port 2 down to below the car. This setup resulted in a severe oil leak and I then installed the stock PCV valve and boxed up all my PCV junk and put it on the shelf.
so after trying VTA and having the leak get worse it kind of proved my suspicion that it was the lack of manifold vacuum under non boost conditions causing the leak, turbo vacuum when not boosting wasn't enough.
Fast forward a month or so to today. Working on the willys and not the car has provided a change of pace and now I'm ready to get back on the car again. Having $100 worth of parts I cant use sitting on the shelf doesn't sit right with me. So I made this thread so we can figure it out or I can give up and sell my PCV plate and plug. Id rather not do that as I want the oil and junk out of my intake and tubes.
So why cant I run catch can like everyone else? There are plenty of people on here running VTA with no problems.
Thank you in advance for the help
Alex