[Vwdiesel] Crappy fuel? (was Touareg)

[Nate Wall]

Its interesting, but the big, over-the-highway tractor trailer rigs run draft
tubes, as do city buses, at least they did the last time I checked, to vent
crancase vapors to the atmosphere, so it must be bad to reroute them. EPA may
have changed this by now, though.

Cars and small engine (like lawnmower motors) crancases were vented to
atmosphere in the US up until 1961, or 1962 model year. California caused the
EPA to adopt the rerouting of crancase vapors after substantial research was
done in the late 1950s bacause of smog in the LA basin. I actually read some of
the SAE papers from that era. The test PCV valves looked just like the valves
used today! It was determined that burning the blow-by vapors would reduce
hydrocarbon emissions from cars by 25% and at a cost of a couple bucks per car.
I'm not sure if they ran engine durability tests, though.

--Nate

TexasTDI wrote:

> It's no "design flaw" except for the fact that a diesel motor was never
> intended to have an EGR or CCV.  But thanks to the EPA, diesels have to have
> them now.
>
> EGR and CCV are but two things the EPA requires that actually HARM the
> motor.  The EPA could care less about how long the motor lasts as long as it
> pollutes less.
>
> Another example is the new Honda's and Ford car's using 5w-20 oil.  That's
> way too thin of an oil for virtually any climate, unless you live in the
> Arctic.  Think those cars will live past 100k miles?  HAH!  But it allows
> the cars to pollute less, so that's the weight of oil they're using.
>
> And AFAIK, all TDI's sold everywhere in the world, have to use the EGR and
> CCV.
>
> 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: "Mary Beth and Chris Geiser" <geiser at execpc.com>
> To: "'TexasTDI'" <TexasVWdriver at hotmail.com>
> Cc: <vwdiesel at vwfans.com>
> Sent: Monday, February 24, 2003 5:55 AM
> Subject: RE: [Vwdiesel] Crappy fuel? (was Touareg)
>
> > So are they having these same problems with the TDI's in Europe and
> > elsewhere, or do they not put EGR's on vehicle's outside of the US?  Is
> > this a "design flaw" that VW should take care of?
> > I don't have a TDI, but I've been reading enough people who have this
> > problem...
> > Chris
> >
> >
> > -----Original Message-----
> > From: vwdiesel-admin at vwfans.com [mailto:vwdiesel-admin at vwfans.com] On
> > Behalf Of TexasTDI
> > Sent: Sunday, February 23, 2003 5:30 PM
> > To: Mary Beth and Chris Geiser
> > Cc: vwdiesel at vwfans.com
> > Subject: Re: [Vwdiesel] Crappy fuel? (was Touareg)
> >
> > Our higher sulphur diesel won't allow us to use the same catalytic
> > converters and particulate traps that Europe does.  But the main reason
> > the
> > EGR and intake get clogged up is because the EGR lets in sooty exhaust
> > into
> > the intake and the CCV lets in oily vapors from the motor into the
> > intake.
> > Add these two together and you get a clogged intake and EGR.
> >
> > Chris Thornton
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