[Shotimes] PCV (was Throttle body gasket)

[Zach Leahy]

Ok, someone needs to say it:

Mechanics don't come in bottles.

there, it's said, fling whatever you will at me, but I don't use any
of these addatives in my cars, and they never will fix anything.

Z

On 4/9/06, Mark Mucher <mmucher@bellsouth.net> wrote:
> Paul,
>
> If you will remember <G>, I finished a double treatment of Auto-Rx to solve
> the front seal dripping problem.
>
> It's worse now!
>
> I don't blame Auto-RX for that - it's just not an option at this point!
>
> Thanks,
>
> Mark
>
>
>  _____
>
> From: Paul Nimz [mailto:pnimz@v8sho.com]
> Sent: Sunday, April 09, 2006 12:58 PM
> To: `V6 SHOtimes; 'Mark Mucher'
> Subject: RE: [Shotimes] Throttle body gasket
>
>
> The large hose that enters the back of the TB is from the oil separator in
> the valley under the LIM.
>
> Here's my take on your situation.  First the V6 SHO motor relies solely on a
> venturi effect to provide PCV ventilation.  A less than effective means vs.
> the normal PCV valve and intake vacuum setup.
>
> So I would assume over the years that the carbon has built up behind your
> rings and the crankcase blowby is creating excessive pressure, more than the
> anemic Yamaha PCV system can overcome.  This will cause blowing out of the
> seals, also pushes oil into the plug wells.
>
> Although new seals will help before I went through all that trouble I would
> first use two treatments of Auto-RX.  First it will clean the rings as well
> as the entire oil circulation paths, this reducing the blowby, and second
> will soften the seals by pulling the impregnated carbon out of them.
>
> Paul
>
>
>
>
> On 4/9/2006 11:14:52 AM, Mark Mucher (mmucher@bellsouth.net) wrote:
> > Thanks again, Paul
> >
> > OK - the throttle body is off (filthy as expected, but not more than
> > expected...) and there is no restriction in the PCV ports that I could
> > find.
> >
> > The big one is wide open, but the hose that goes from it to under the
> > intake is now my area of concern.
> >
> > I tried to get my lips around it - SHUT UP! <G> - and it seems OK, but I
> > couldn't get a good lock, plus it disappears into the bowels under the
> fuel rail.
> >
> > Where does it go? What are the possible areas of restriction?  I tried to
> RTFM, but I can't
> > find anything - perhaps
> > it's in the emissions FM?
> >
> > Maybe I should just vent the hose from the front cam cover to the open
> (ducking flak from tree huggers) for a while to see if that helps. But it
> just goes into the intake behind the throttle body and ports into the TB
> where, again, I could find little or no restriction. I CAN blow from the cam
> cover end of that hose thru the TB, but not without a little restriction.
> >
> > Finally, there is a small hose near the IAB the goes to a solenoid and
> then to the canister (I think). That is blocked (with the motor and ignition
> off), but that's
> > probably normal.
> >
> > This is my only (running) vehicle,
> _______________________________________________
> Shotimes mailing list
> Shotimes@autox.team.net
> http://www.team.net/mailman/listinfo/shotimes
>


--
Zach Leahy
Fort Wayne, IN
1985 BMW K100RT - For Sale!!
1992 SHO MTX - Arrest Me Red
1993 SHO MTX - Green Racecar