Re: fuel mixture

[Anthony Pelletier <vwnuts@yahoo.com>]

I wouldn't put RTV sicicont anywhere on the intake
track.  I couldn't figure out why I was smoking O2
sensors.  Well, thats why.  It doesn't like cats much
either I hear.  Just buy an o ring from the hardware
store or get a new screw $8 from potter for the last
one I bought.


--- Gary Huff <scirocco86@home.com> wrote:
> ISV duty cycle. It's something you measure of a test
> lead in the engine compartment near the ignition
> coil. It's the amount of time the idle stabilizer
> valve spends open IIRC. On a duty cycle meter it
> should be between 26-30%. You adjust it by turning
> the idle air bypass screw in the back of the intake.
> Once this is set, put a fair amount of blue RTV in
> the idle air bypass screw hole to seal it, as the
> o-ring in there is completely shot most of the time.
> Next set the ignition timing, and then set the dpr
> current. They must be set in this order, trust me I
> learned the hard way. The reason ISV duty cycle is
> important is because the DPR is
> regulating/correcting the amount of fuel given to
> the motor for the air that is allowed to pass into
> the motor by the ISV. Hope this helps. Peace,
> 	-Gary Huff
> 
> 2000 Golf GLS 1.8T
> 1986 16v Scirocco <-- closer to running properly....
> 1975 Scirocco
> On Mon, Jun 25, 2001 at 11:00:58PM -0400, S.Coleman
> wrote:
> > Gary,....can you explain this "idle stabilizer
> valve duty cycle" bit.  I
> > swear I haven't ever done this.  (doh!)
> > Thanks,
> > Chris
> > ----- Original Message -----
> > From: "Gary Huff" <scirocco86@home.com>
> > To: "Brad Sayer" <vwrocco85@hotmail.com>
> > Cc: <scirocco-l@scirocco.org>
> > Sent: Monday, June 25, 2001 10:31 PM
> > Subject: Re: fuel mixture
> > 
> > 
> > > 10ma is what the 16v Scirocco should run. Set it
> to 5ma if you like more
> > mid-range pull, but slightly less low end torque.
> Don't forget to set idle
> > stabilizer valve duty cycle, and timing first
> though....
> > > -Gary Huff
> > >
> > > On Mon, Jun 25, 2001 at 07:18:30PM -0400, Brad
> Sayer wrote:
> > > > Ok, so now another person has told me that the
> fuel mixture on a 16V
> > should
> > > > be set by getting 5ma at the differential
> pressure regulator (DPR).
> > But, I
> > > > just read the hole section in the bently and
> it says 10ma (in 2
> > different
> > > > places, no less).  This is for a CIS-E 16V as
> per the usual
> > > > Scirocco/Cabriolet Bentley manual.  Could a
> GTI 16V be 5ma while a
> > Scirocco
> > > > 16V is 10ma?  That would explain the confusion
> I believe.
> > > >
> > > > Which is right: 5ma or 10ma?  Its a pretty big
> difference.
> > > >
> > > > Brad
> > > >
> > > > 87 16V
> > > >
>
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