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View Full Version : Ok, boost leaking out back of engine, what is it? pic



ixi
03-06-2008, 02:11 PM
Ok, I'm tracking down a boost leak and air is escaping where my finger is. The tip of my finger is on the leak. it's rubbery back there, what is it and how many hundreds of dollars will it take to fix it?

http://aycu25.webshots.com/image/47344/2005617973153175530_rs.jpg (http://allyoucanupload.webshots.com/v/2005617973153175530)

http://aycu10.webshots.com/image/46569/2003292779555129699_rs.jpg (http://allyoucanupload.webshots.com/v/2003292779555129699)

99 1.8 aeb

Ewok_Fetus
03-06-2008, 02:55 PM
Cam chain tensioner seal... $$$ if you have the dealer do it... $5 if you do it yourself... Also, are you blocking off your crank breather?

ixi
03-06-2008, 03:04 PM
Cam chain tensioner seal... $$$ if you have the dealer do it... $5 if you do it yourself... Also, are you blocking off your crank breather?


Ahhhh......I think I can do that. Is my crank breather the hock puck thinger? If so I didn't block it off this time.

Would a bad cam chain tensioner seal be related to a boost problem? I'm getting a violent jerk when boost gets over 15 psi.

erikas3
03-06-2008, 03:05 PM
Not really any help, but I also had air escaping out of there when I forgot to disconnect the puck valve when doing a boost leak test..

audiFUEGO
03-06-2008, 03:08 PM
you should disconnect that before you pressurize

ixi
03-06-2008, 03:28 PM
Man, I completely forgot to do that this time.

So after disconnecting the hockey puck it's not leaking back there anymore. I'm getting something down near the n75, hopefully I can find it soon. Thanks for all the help.

So do you think that cam seal is bad if it's leaking air or is it ok?

audiFUEGO
03-06-2008, 03:42 PM
your leaking vacuum thru the cam seal i believe.

The boost leak your hearing is most likely from around the N75 nipple in your TIP. Spray soapy water to make sure and then reposition the clamp

AudiRacerS4
03-06-2008, 05:36 PM
cam seal is a pita because you need to remove one of the cams...hence the reason i got revolver cams when i changed mine lol [:D]

Rico750
05-01-2008, 11:51 PM
dirty engine FTL

Euro-Tuner
05-02-2008, 05:57 AM
VW engine cover?

kjgarreau
05-02-2008, 01:59 PM
No, oil weeping through there is coming from your valve cover gasket or your cam tensioner gasket. No affect on boost.

Brooksthepro
05-02-2008, 08:07 PM
it wont leak boost. it will just leak oil slowly.