[Vwdiesel] TDI BEW intake manifold flapper

[Tad]

Just to add a potentially important point to what was said earlier - the
antishudder valve also serves the purpose of providing a failsafe to cut off
air and kill the engine in the event that it tries to runaway on engine
oil/blowby/blown turbo seal/etc.  Not that it happens much on a TDI, but it
was not uncommon on older IDIs.

Loren - Mine's an ALH (not BEW), but with my chip I used to get boost spikes
as high as 30 PSI until I added a boostvalve, which limits the spikes to
about 20.  Steady-state is in the 16-18 range.  Sorry, no data on EGT.

On Sun, Aug 1, 2010 at 10:36 AM, <dieseltdi at verizon.net> wrote:

> That "flapper" is essentially a shut down valve.  When power to the
> engine is cut off, the flap closes and allows for a smoother shut down
> of the engine instead of the classic abrupt stop that diesels do when
> fuel is shut off.  Can't take it out because the computer is connected
> to it and will not allow the engine to operate properly without it.
> The BEW engines, have MUCH less problems of intake fouling than the
> earlier diesels.  There is a very different arrangement of  things
> that really cuts down on the presence of soot and oil.  BTW if the
> flapper becomes fouled with crude, the engine can be prevented from
> even starting as it is choked for air.  Hayden
> On Aug 1, 2010, at 1:43 AM, travis gottschalk wrote:
>
> >
> > What the heck is that flapper thing near the head on the intake
> > manifold on my 04 golf BEW engine? Does it hurt to take it out?
> > Also, any ideas to have a catch jar for the crank vent hose. Seems
> > that adds most of the oil mist into the intake and I have hear of
> > adding a catch on the ALH engine but not the BEW. In the middle of
> > the timing belt and while I was there I decided to clean the intake
> > system and add a EGT and boost gauge.
> >
> > Travis G
> >
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