[T3] Intermittently running on two cylinders

Sat Dec 1 13:03:40 PST 2012

fuses too!

On Sat, Dec 1, 2012 at 1:01 PM, Mike Fisher <fisherfarms at gmail.com> wrote:

> 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
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>> > > >
>> > > >
>> > > > --
>> > > > Eugene, Oregon
>> > > >
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>
>
>
> --
> Eugene, Oregon
>
> http://s169.photobucket.com/albums/u236/mr_bojangles500/
>

-- 
Eugene, Oregon

http://s169.photobucket.com/albums/u236/mr_bojangles500/
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