Date:         Wed, 14 Jun 2000 00:11:52 -0400
Reply-To:     David Beierl <dbeierl@IBM.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@IBM.NET>
Subject:      Re: fuel pressure regulator questions
Comments: To: Matthew Pollard <poll7356@UIDAHO.EDU>
In-Reply-To:  <Pine.GHP.4.21.0006132012440.161-100000@raptor.csrv.uidaho. edu>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 23:31 6/13/2000, Matthew Pollard wrote:
>I see these values are high, but only by a few psi-  are these value too
>high? And would they be the culprit to my rich running problem?  A new
>pressure regulator is $70 and i would like not to just throw $ at the
>potential problem.

The regulator is supposed to supply 2.5 bar (36 psi) over manifold
pressure.  If it supplies 10% more than this, the injectors will supply 10%
more fuel than expected.  The ECU will attempt to compensate by reading the
O2 sensor, but if its compensation ability is exceeded the motor will run rich.


>I suppose i should get a 'second opinion' by riggin' together another
>pressure reader.

I think so.  But for a start, stick your gauge in an evacuated bell jar
with the gauge inlet vented to outside air -- you should read about 14.5
psig with pressure of 1 torr or so.  I presume that you have access to that
sort of thing...


>I have also been checking all vacuum lines. One thing i noticed is that
>there is some oil coming out of the hose coming from the verticle black
>breather pipe thing. Is that uncommon?

No. Normal (in small quantities) AFAIK.

david

David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"