Old Library

This is your PCV valve assembly.  It is not uncommon for these to leak. 
If anyone has a VR6 with more than 20k miles that *doesn't* leak please
speak up!  You have two options:  remove and clean w/ carb cleaner or
other solvent, or you can purchase a new one for like $200 or some other
outrageous price.  

If you do decide to clean it, here's a hint in dissassembly.  When
loosening the  hose clamps on the intake and other hoses, make sure you
loosen them almost all the way without completely opening them (make
sense?).  Especially the intake hose where the it connects to the
T-body.

Randy
95 GTI VR6
The Flying Grape

Jones, Jerry wrote:
> 
> Hello all, My VR6 seems to have developed a minor oil leak. It seems to be
> coming from a pancake shaped device (EGR?) that is connected to the valve
> cover right by the plastic timing chain cover. The other end of this piece
> connects to a short plastic tube that merges with the intake boot. This
> plastic tube has a sensor in it . Does anyone know what this is ? and if
> this is a common failure? I have 15K on my ride and no mods other than the
> air horn being removed. Thanks, J.
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I had some work done on mine back in Sep. '97. My PCV intake boot was
leaking, causing a build up of oil on the fuel lines directly below. They
replaced the boot (aka "elbow"). I got the following from my invoice:
Part #: 3A0-129-615-E
Description: Elbow

HTH-
Richard


-----Original Message-----
From: Jones, Jerry [mailto:&#74;erry.Jones&#64;psc.bellhowell<img src=/i/dc.gif border=0 width=35 height=15>]
Sent: Tuesday, January 05, 1999 9:58 AM
To: 'GTI List'
Subject: [gti-vr6] PCV Leaking Oil


Hello all, I am about to take my VR6 into the dealer to have them
replace
the PCV valve, as it is leaking at the sensor area which is halfway
between
the valve cover and the intake boot to the Throttle Body. I remember a
post
a while back that there was a one piece part that was supposed to cure
the
problem. Does anyone have any information on this part? Possibly a part
number? Has anyone had the same problem as me? The oil drips onto my
exhaust
shield and causes an odor of burning oil. Thanks to all who respond.
Jerry.
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I've seen this problem on all VR6s.  It leaves a permanent stain on the
exhaust manifold heatshield.
We place hose clamps on the biggest offenders, with 75% success rate.  
Another option is a catch tank.

Todd
Air & Water

&lt;&lt;From: &#85;1arunit&#64;aol<img src=/i/dc.gif border=0 width=35 height=15>
Subject: Re: [gti-vr6] pcv leak

In a message dated 2/20/99 2:53:55 PM Eastern Standard Time,
&#100;eshre01&#64;engr.uky<img src=/i/de.gif border=0 width=35 height=15> writes:

> 
>  Oil is blown through the pcv on VR6 cars, and it accumulates in the air
>  intake boot.  Would you rather it seep ouit or stay there, forcing you to
>  disassemble your air intake frequently.
>  
>  -dave

So are you saying that VW has designed this built in flaw? Where are the oil
vapors supposed to go according to VW? How about into the engine to be burned?
If they stay there is the oil going to build up so much that air can't get
through. I would say no. What IS the answer then? 

Sounds to me like VW should have a recall or bulletin on this matter. Most
people probably just deal with the leak. I wonder if anyone else out there
knows the fix? Don? Todd? Anyone..?

Regards,

Mark Herrly>>                       
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Todd wrote:
       I've seen this problem on all VR6s.  It leaves a permanent stain on
the
exhaust manifold heatshield.
We place hose clamps on the biggest offenders, with 75% success rate.
Another option is a catch tank.

Todd
Air & Water

Has anyone tried a catch tank on OBD II cars? Remember, the crankcase vent
system keeps the crankcase in a low vacuum state. Venting it to the
atmosphere would cause a vacuum leak, and upset the fuel mixture, which will
require the fuel trim to compensate.
At best, this will hurt fuel mileage. Worst case would turn on the MIL and
store a fuel related fault. Perhaps a sealed catch tank with an inlet and
outlet would work. I agree with the clamp fix. It is easy and it works.
Perhaps some listers are guilty of letting dealers/shops add too much oil
during oil changes. Overfilling, even slightly, will worsen the problem.

Bob C. - not enough of a leak to be worried about edition.



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O.K.

I know I will get flamed by all the Tree huggers out there that say this
is bad for the environment, but hear is what  a lot of people have done
around hear when the PCV valve goes bad and you don't want to pay
through the nose for a new one.  Unhook the wire that goes to the
valve.  Then
remove the valve and throw it in a trash can.  Now plug the hole that is
in your intake tube with  something like a very big bolt.  MAKE SURE
you use a ring clamp around the bolt, so as not to let it get sucked in
to your TB, THIS WOULD BE VERY BAD.  Now get a long piece of hose" auto
hose not garden it will melt".  Take the hose and clamp it to where the
valve use to be.  Run the other end down and toward the ground, don't
let it touch anything that could melt it.  NO you will not have a
leaking car.  Unless you keep over filling your oil the only thing that
comes out is vapor. The reason that the Valve leaks is that it gets
clogged the hose can not.  I have seen this mod on at least eight cars.
Form a 95 to a new 99 that leaked.   One guy used a Foam crankcase
breather from Pep Boys instead of a house looked nice "it was made of
red Aluminum" only bad thing was he says he has to clean it once a
month.      While I am not telling any one to do this it dose work.  Oh
the wire is just to a heating element.

95 Gti no leak edition

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<P>O.K.

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Maybe this is common knowledge to most of you, but it surprised me. 
There was some reference to this in the FAQ...

This weekend at a VWCOLA event, a guy told me that all VR6 engines leak
oil.  The leak is located along the air intake after the airbox and
before the throttle body.  The ~3" air intake hose has a small ~3/4"
hose running into it.  The smaller hose runs into the air intake hose at
about the 5 o'clock position (looking towards the firewall).  The
smaller hose has a sensor with 2 leads running to it.  The smaller hose
pushes onto a male extension running from the air intake.

Anyway, when the guy told me this I told him he was full of crap.  We
went out to my car (2000 miles, new in December, 99 MY A3), and sure
enough, there was oil on my fingers after checking it.  A good amount
too.  

I went to Pep Boys today and bought a 1/4" to 3/4" hose clamp and put it
onto the smaller hose.  He fixed his the same way and claims no trouble
in 25,000 miles so far.  There is already a hose clamp on one side of
the electrical connector, the one I added went on the other side at the
base of the air intake extension.

I don't know if the guy was correct about all VR6s having this problem. 
It is worth looking at, as I cannot believe any oil leak is OK.  The
car was certainly not designed to leak a little bit of oil.  The small
hose pushes onto the male extension that is part of the air intake. 
Pretty poor design if you ask me.  Maybe the engine leaks oil there more
when it is new.  At any rate, you should all check your cars the next
time the hood is up.  If your car loses oil between change, this is
definitely worth looking at.

Jon Maddux
99 GTI VR6 Ginster Yellow
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This tube you speak of may drip a litle oil but I wouldn't
consider it an oil 'leak'.    This assembly is just capturing oil
vapours from your valve cover area.   Positive Crankcase
Ventilation (PCV)     This is to reduce pressure of your upper
valve area and reduce emissions.   The vapours are drwn in to your
air intake and burned off in combustion.

If you overfill your oil, you will have more than normal vapour
pressures and will drip more often.   I am not saying there should
be a drip by any means.   Go ahead and clamp to stop drips but
don't think that this is why you may be losing oil between oil
changes ........... not a measurable amount unless you overfill.

By the way .............. don't break your PCV valve, they cost
about $185 U.S. to replace along with the heater element and small
hoses!    I am still looking for a used replacement for mine.


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