[16v][tech] Dirty intake valves?

[rick@brubakerbox.com (Rick Alexander)]

OK, I've been watching this to see what the theories were on it. I'm
thinking it should prove to be interesting reading. Low and behold Rolling
Roc blows a head gasket. 1/4 million miles and a new short block on stand by
so I'm not bitching. Here's the rub, I notice the same thing. It's apparent
on 1,2,3 cylinders - 4 is carboned  on both intake valves - it turns out
that that injector is crap. Drivers side intake valves are black like a
fouled plug from the guide to the seat. The passengers side intake valves
are as clean as a whistle like they were installed last week. So it looks
like this is not something that only Chris has.

Rick Alexander
http://www.brubakerbox.com
http://clubs.hemmings.com/hams/
http://clubs.hemmings.com/vwsrus/

----- Original Message -----
From: "Larry" <rocco16v@netzero.com>
To: "Night Shadow" <soltwede@privateI.com>
Cc: "Dan Bubb" <jdbubb@ix.netcom.com>; "Chris M" <pb1113@hotmail.com>;
<scirocco-l@scirocco.org>
Sent: Sunday, February 17, 2002 9:23 AM
Subject: Re: [16v][tech] Dirty intake valves?


> Chris-
>  Need more information;
> Is it the faces, or the backsides (upstream side), of the DS intake valves
> that are dirty?Or both sides?
> Do just the valves exhibit this, or do the separated ports themselves look
> the same, i.e. DS dirty and PS clean?
>
> Larry  sandiego16V
>
> ----- Original Message -----
> From: Night Shadow <soltwede@privateI.com>
> To: Larry <rocco16v@netzero.com>
> Cc: Dan Bubb <jdbubb@ix.netcom.com>; Chris M <pb1113@hotmail.com>;
> <scirocco-l@scirocco.org>
> Sent: Saturday, February 16, 2002 9:06 PM
> Subject: Re: [16v][tech] Dirty intake valves?
>
>
> >
> > Well....lets atleast hear your opinion on my CCV theory.
> >
> > Eric
> >
> > On Sat, 16 Feb 2002, Larry wrote:
> >
> > > Heck, Dan, I haven't GOT one!!!!   ....for once. :)
> > >
> > > Larry  sandiego16V
> > >   ----- Original Message -----
> > >   From: Dan Bubb
> > >   To: Larry ; Chris M ; scirocco-l@scirocco.org
> > >   Sent: Saturday, February 16, 2002 3:27 PM
> > >   Subject: Re: [16v][tech] Dirty intake valves?
> > >
> > >
> > >   Well, shit! Let's have yours first.
> > >
> > >     ----- Original Message -----
> > >     From: Larry
> > >     To: Chris M ; scirocco-l@scirocco.org
> > >     Sent: Saturday, February 16, 2002 3:44 PM
> > >     Subject: Re: [16v][tech] Dirty intake valves?
> > >
> > >
> > >     Man, I can't wait to hear the theories on this one!!
> > >
> > >     Larry   sandiego16V
> > >       I have my intake off and I was looking at the intake valves
> yesterday and noticed that the right-hand (driver's side) valve in each
port
> is way dirty with some kind of baked-on oil or something.  The passenger
> side valves are all clean as a whistle.  Any idea what could cause this?
My
> first thought is valve seals, but it doesn't make sense that all the ones
on
> the driver's side of each port would be bad.  The engine ran decent when I
> took it off the road, so I don't think anything major is wrong with it,
I'm
> just curious what could cause this...
> > >
> > >       Thanks...
> > >
> > >       Chris M.
> > >       82 8v Scirocco
> > >       88 16v Scirocco
> > >       70 MGB (wife's car)
> > >       76 Chevy Laguna
> > >       http://www.geocities.com/vw16vmp3scirocco/
> > >       pb1113@hotmail.com
> > >
> > >
> >
> > --
> > Eric
> > Northglenn, CO
> >
> > 76 Honda CB400F Super Sport
> > 80 Scirocco (Parts car again, no more DD duty)
> > 81 Scirocco S (2.0 16v swap and complete restoration in progress)
> > 81 Rabbit Truck LX Diesel (THE NEW RIDE)
> > 91 Cabriolet (2.0 Crossflow 8v swap and mechanical rebuild in progress)
> > 00 Golf GL TDI (Katy is driving this for now)
> >
> > "For Aquarians, the physics of loopholes is a perfectly valid science."
> > -Kelli Fox
> >
> >
>
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