RE: Underboost: '90 200 TQW IA Stage 1

[Peter Henriksen <peterhe@microsoft.com>]

I don't think that hose (back of intake manifold to bypass valve) exists
on the 10v cars - at least not in the same place.

On that note, that hose is a good candidate for a leak and for
re-routing around the outer edge of the engine bay instead of between
the block and the turbo.
- peter, peterhe@microsoft.com, issaquah, wa, usa
  91 200qw
  94 acura legend gs
  80 mazda 626


>-----Original Message-----
>From:	mallick@orion.crd.ge.com [SMTP:mallick@orion.crd.ge.com]
>Sent:	Tuesday, September 17, 1996 7:25 AM
>To:	quattro@coimbra.ans.net
>Cc:	tforhan@usa.pipeline.com
>Subject:	Re:Underboost: '90 200 TQW IA Stage 1
>
>Tom wrote...
>
>Well, after 15,000 miles of trouble free ownership (ah, except the fuel
>pump replacement), the gods have finally bit. 
>
>Max boost, formerly 1.7 or 1.8 bar, is now 1.4. Car seems to run fine up
>to that point. I did a visual inspection of the turbo hose and it looks
>ok: rubber is in good condition, no visible holes, cannot feel anything
>amiss on the underside.
>
>...
>
>Check the clamps on the turbo hose.  Also check all the vacuum hoses
>and connections for leaks.  The vacuum hose from the back of the
>manifold to the turbo bypass valve runs behind the heat shield next to
>the wastegate/turbo and will burn up over time (that was the problem
>on mine).  Easy way to check for leaks:  Remove end of air intake hose
>from air filter box; bend over and shove hose over mouth; blow into
>hose and see if you can build up pressure; if you can build up
>pressure, no big leaks; if you can't, go hunting.  
>
>Oh, yeah...don't forget to wash the big black circle off of your face
>before your wife sees it :-)  BTDT
>
>John Mallick 
>'91 200q (250mi from 100K)
>
>