Date:         Wed, 24 Apr 2002 10:13:19 -0400
Reply-To:     Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM>
Subject:      Re: Advancing timing
Comments: To: wb6otg <wb6otg@INTREX.NET>
Content-Type: text/plain; charset=us-ascii

This is for 1.9s only.  Set the idle speed and timing with the stabilizer
jumped (leads hooked together).  The idle will speed up as the timing is
advanced.  You must crank the idle speed screw (large slotted screw on top
of the throttle body) down to return idle to spec.  I would try going to
TDC (advanced from 4 or 5 ATDC).  Turn the distributor until the TDC mark
(the round groove) aligns with the case split.  The "V" groove indicates
the stock 5 ATDC setting.   Most idle hunting problems are due to the idle
speed screw being set too far from where the stabilizer wants to control it
at.  5 BTDC may be too much, although I have run it that way in the past.
Right on TDC may be a good compromise and is easy to eye-ball using the TDC
mark on the pulley.  I am currently breaking in a new Boston Bob engine, so
I am running stock timing.  Once broken in, I will probably go to TDC.   It
does seem to give a little better pull up through the gears, especially
that big gap from 2nd gear to 3rd gear.

                                                            Jay




wb6otg <wb6otg@INTREX.NET>@gerry.vanagon.com> on 04/24/2002 09:48:52 AM

Please respond to wb6otg <wb6otg@INTREX.NET>

Sent by:    Vanagon Mailing List <vanagon@gerry.vanagon.com>


To:    vanagon@GERRY.VANAGON.COM
cc:
Subject:    Advancing timing


I have seen many references to the benefits of advancing the timing on the
1.9l engine, so I decided to try it.  I found that if I advanced the timing
at all, the idle would start to surge (jumping between about 1000 RPM and
2500).  Any ideas?

Some related info:  I have had a problem with the idle being rough.  The
engine runs ok (passes emissions with more margin than any other car I have
owned) but sounds kind of like it has a "hot" cam.  While setting the
timing, I noticed that the timing would vary by a degree or so, several
times a second.  I disconnected the idle stabilizer and adjusted the idle
speed to spec (it dropped significantly and the timing variation stopped
when I disconnected the stabilizer)  When I re-connected the idle
stabilizer, the idle speed was right and the timing variation was gone.  I
wonder if I have a bad idle stabilizer.

Bill