[Vwdiesel] Crappy fuel? (was Touareg)

[TexasTDI]

Good point.  I never really gave it that much thought.  Some people have
installed small air breathers on their CCV hose to prevent this.  I might
have to invest in one myself.  };-)

Chris Thornton
1991 VW Jetta GL 2 Door 1.6D - 234k miles
2000 VW Golf GLS 1.9TDI 130hp/229ftlbs - 77k miles
Amsoil Synthetic Lubricants Dealer #1098500
http://www.amsoil.com
http://texastdi.com/6/ubb.x

----- Original Message -----
From: "Nate Wall" <nwall at opei.org>
To: "TexasTDI" <TexasVWdriver at hotmail.com>; <TexasVWdriver at hotmail.com>
Cc: "Bryan Belman" <dieselwesty at yahoo.com>; <vwdiesel at vwfans.com>
Sent: Monday, February 24, 2003 3:03 PM
Subject: Re: [Vwdiesel] Crappy fuel? (was Touareg)


> I ran a draft tube on the '85 Jetta TD for about half a year to see if the
> oil in the intake stopped since I thought the turbo might be leaking it
(it
> did stop, so it was blowby vapor in the intake), but after about 6 months
> when adjusting the valves, I noticed a gritty substance on the innards of
the
> cylinder head, very noticeable, where the oil circulates. After this, I
> disconnected the draft tube (about 5 feet of 7/8 inch heater hose w/ a
copper
> 90 elbow on the bottom, cut off at a 45 degree angle). I then carefully
> studied the draft tube set-ups on heavy-duty diesel engines at truck shows
> and by talking to design engineers (I worked w/ truck manufacturers at the
> time). There is a filter on engine block where the draft tube comes out to
> prevent dirt from getting into the engine. My thought is that dirt and
sand
> either migrated up the draft tube and into the motor, or was sucked past
the
> engine seals due to negative pressure in the crancase. At a 70 MPH higway
> speed, this could be substantial. I can't recall if I removed the pressure
> regulator when I put on the draft tube (I think it prevents this neg.
> pressure from the turbo sucking air past the breather opening in the
intake
> boot). Well, after I re-installed the breather to factory specs, end of
> gritty stuff in the cylinder head. W/ that draft tube, you have an open
> system. This may not be good.
>
> --Nate
>
> TexasTDI wrote:
>
> > I quickly and cheaply solved my EGR and CCV problems.  Using VAG-COM I
> > adjusted the EGR so it doesn't activate as often.  And I disconnected
the
> > CCV so that it vents into the air instead of my intake.  I need my TDI
to
> > last as long as possible with minimum maintenance.
> >
> > Chris Thornton