[T3] Intermittently running on two cylinders

[Jacob Adam Schroeder]

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
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> > >
> > > --
> > > Eugene, Oregon
> > >
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