[T3] Intermittently running on two cylinders

Sat Dec 1 13:01:49 PST 2012

ANY of the connectors can cause problems and should be cleaned/checked if
necessary.  Take the color wiring diagram from the Bentley to Kinkos and
have it blown up to 11"X17" and laminated for your wiring investigations!
Some use a little grease on all the connections.

On Sat, Dec 1, 2012 at 12:53 PM, Jacob Adam Schroeder <
jacob.schroeder at gmail.com> wrote:

> Cool, thanks!  This has all been very helpful.  I'll check this out and
> report back once I do.
>
> Jacob
>
>
> On Sat, Dec 1, 2012 at 12:29 PM, Adriel Rowley <adriel_rowley at hotmail.com
> >wrote:
>
> >
> > Center of the engine by the A.A.R..
> >
> > Think of electricity as a pipe. A supply is put in the pipe, and needs to
> > go somewhere. If there is no ground, there is no flow. If a wire is
> broken,
> > there is a leak in the pipe. The flow goes from the e.C.U. to the
> injector,
> > through the injector, then ground. You can trace paths with an O.V.M.
> and a
> > lot of the information is in the Idiot's Guide.
> >
> >
> > Hope this helps,
> > Adriel
> >
> >
> >
> > -------------------------
> >
> > 1971 Sunroof Squareback with F.I.- Located in Coastal San Diego County
> > Student, A.S.U. Tempe, AZ
> >
> >
> > ----------------------------------------
> > > From: jacob.schroeder at gmail.com
> > > Date: Sat, 1 Dec 2012 12:24:20 -0800
> > > To: type3 at vwtype3.org
> > > Subject: Re: [T3] Intermittently running on two cylinders
> > >
> > > Thank you, it looks like I need to focus on the FI grounds. Where are
> > > these located on a '72? Are you guys referring to the connector
> > > contacts themselves?
> > >
> > > Jacob
> > >
> > > Sent from my iPhone
> > >
> > > On Dec 1, 2012, at 12:06 PM, Mike Fisher <fisherfarms at gmail.com>
> wrote:
> > >
> > > > Use sandpaper on your pairs of FI grounds & add star washers for a
> > better
> > > > connection.
> > > >
> > > > On Sat, Dec 1, 2012 at 11:54 AM, Daniel Nohejl <
> danielnohejl at gmail.com
> > >wrote:
> > > >
> > > >> My wife and I are currently battling this very issue on our '69 SB
> > with
> > > >> stock FI. We're not running Pertronix though. Perhaps you should
> > begin by
> > > >> verifying the ignition system?
> > > >>
> > > >> For a while, we were running on #1, #2, and #4. When diagnosing #3,
> > the
> > > >> connector for the ground wire snapped off. The wire was brittle and
> > though
> > > >> I didn't see it prior to breaking, it could have been that the
> > connection
> > > >> was so bad that #3 wasn't firing. After replacing the ground
> > connector, #3
> > > >> works.
> > > >>
> > > >> After that, we lost #2 but haven't had a chance to replace the
> > connectors
> > > >> there or do other diagnosis yet.
> > > >>
> > > >> I'm no expert, but I'd check the ignition system and the injector
> > ground
> > > >> connectors.
> > > >>
> > > >>
> > > >> DN
> > > >>
> > > >> On Dec 1, 2012, at 2:46 PM, Jacob Adam Schroeder wrote:
> > > >>
> > > >>> My car has developed an issue lately where occasionally it will
> feel
> > like
> > > >>> it is running on two cylinders. When it does this, I can pull the
> > wires
> > > >>> from the fuel injectors on cylinders 2 and 4 and notice no
> > difference in
> > > >>> the sound of the engine. If I pull 1 or 3, I hear the RPM decrease
> > and
> > > >> it
> > > >>> sounds like it is running on only 1 (if that is even possible). It
> > is a
> > > >>> 1972 Squareback with stock FI (except for Pertronix electronic
> > ignition
> > > >> --
> > > >>> which I plan to return to the stock set up soon).
> > > >>>
> > > >>> It does not do this all the time. In fact, two weeks ago, the car
> ran
> > > >> well
> > > >>> enough (firing on all 4) that I took it the 22 miles each way
> to/from
> > > >> work
> > > >>> (some of which was highway driving) while my 2012 Golf was in the
> > shop
> > > >>> (don't get me started on that). I thought the problem must have
> > "worked
> > > >>> itself out" after that, only to find the problem again this
> morning.
> > > >>>
> > > >>> I'm looking for ideas as to where to start troubleshoot this or if
> > > >> anybody
> > > >>> else has experience a similar issue. Thanks in advance,
> > > >>>
> > > >>> Jacob
> > > >>> -------------- next part --------------
> > > >>> An HTML attachment was scrubbed...
> > > >>> URL: <
> > > >>
> >
> http://lists.vwtype3.org/private.cgi/type3-vwtype3.org/attachments/20121201/42e26ab6/attachment.htm
> > > >>>
> > > >>> _______________________________________________
> > > >>> VWType3.Org mailing list - type3 at vwtype3.org
> > > >>> http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > > >>> Contact gregm at vwtype3.org if you need help with the list.
> > > >>
> > > >> _______________________________________________
> > > >> VWType3.Org mailing list - type3 at vwtype3.org
> > > >> http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > > >> Contact gregm at vwtype3.org if you need help with the list.
> > > >
> > > >
> > > >
> > > > --
> > > > Eugene, Oregon
> > > >
> > > > http://s169.photobucket.com/albums/u236/mr_bojangles500/
> > > > -------------- next part --------------
> > > > An HTML attachment was scrubbed...
> > > > URL: <
> >
> http://lists.vwtype3.org/private.cgi/type3-vwtype3.org/attachments/20121201/609c8058/attachment.htm
> > >
> > > > _______________________________________________
> > > > VWType3.Org mailing list - type3 at vwtype3.org
> > > > http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > > > Contact gregm at vwtype3.org if you need help with the list.
> > > _______________________________________________
> > > VWType3.Org mailing list - type3 at vwtype3.org
> > > http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > > Contact gregm at vwtype3.org if you need help with the list.
> >
> > _______________________________________________
> > VWType3.Org mailing list - type3 at vwtype3.org
> > http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > Contact gregm at vwtype3.org if you need help with the list.
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.vwtype3.org/private.cgi/type3-vwtype3.org/attachments/20121201/5044e533/attachment.htm
> >
> _______________________________________________
> VWType3.Org mailing list - type3 at vwtype3.org
> http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> Contact gregm at vwtype3.org if you need help with the list.
>

-- 
Eugene, Oregon

http://s169.photobucket.com/albums/u236/mr_bojangles500/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.vwtype3.org/private.cgi/type3-vwtype3.org/attachments/20121201/6a776d9e/attachment.htm>