It seems every answer brings up another question. Bernd, you mention that on
some 94 and older models, you can't set the sync with a DRB. Is this because
of the PCM, or something different with the engine itself? I assume it has
something to do with the PCM, since all the distributor components are the
same. The reason I ask is because my engine is out of a '95 Ram. My Dakota
is a '93 with a '93 Ram PCM (manual transmission). This morning I was able
to pull the distributor and oil pump drive out and rotate it to
approximately the 5 O'clock position. I then followed your procedure to set
the fuel sync. One thing I noticed is that there is a few degrees of
rotation either way before the voltage level switches. I tried to set it
about in the middle. It didn't help my backfire problem, but it seems to run
and idle better.
""Bernd D. Ratsch"" <fasstdak@hotmail.com> wrote in message
news:001b01c4517c$b71d45c0$020aa8c0@bernd...
>
> On some of the older ('94 and older) vehicles, you can't set the sync with
> the DRB. Is the voltmeter way inaccurate? Guess how DC techs were doing
> this before the DRB - voltmeter. While I respect KRC's opinion on how to
> set sync, they don't work for DC.
>
> Proper way is still with the DRB (or any scanner that can show Fuel Sync -
> SnapOn MT2500 for example) - just make sure you install the distributor
> correctly (aligned properly).
>
> - Bernd
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of BlackDak93
> Sent: Sunday, June 13, 2004 1:16 PM
> To: dakota-truck-moderator@bent.twistedbits.net
> Subject: DML: Re: RE: RE: Setting Distributor Drive Timing (Fuel Sync)
> without DRB
>
>
>
> If I read KRC's procedure correctly, they are talking about setting the
> timing mark to TDC for timing the distributor, not setting fuel sync.
Their
> procedure does not state how to set fuel sync with a voltmeter, as they
say
> it is inaccurate. The procedure below addresses how to set the initial
sync
> without a DRB scan tool. I think this is the discrepancy.
>
>
> ""Bernd D. Ratsch"" <fasstdak@hotmail.com> wrote in message
> news:000a01c4516f$b8915b10$020aa8c0@bernd...
> >
> > Yes...that's the official and correct way to set initial sync as per
> > DC.
> If
> > not set properly, you can had adverse performance. The proper way is
> still
> > to properly align the distributor and then set sync via the DRB or any
> other
> > scanner that shows Fuel Sync at 1000rpm (not to be set above or below
> > 1000rpm).
> >
> > - Bernd
> >
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net
> > [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of James
> > Calder
> > Sent: Sunday, June 13, 2004 11:50 AM
> > To: dakota-truck@dakota-truck.net
> > Subject: DML: RE: Setting Distributor Drive Timing (Fuel Sync) without
DRB
> >
> >
> >
> > There seems to be a discrepancy to as where the mark on the damper
> > should be. Some people say the damper should be right on the TDC mark
> > (like
> KRC's
> > write-up) while others say it needs to be advanced to the V8/V6 mark
> > on
> the
> > damper. If the procedure below is as per DC, what's the difference
> > when going by the actual TDC mark and not the V8/V6 mark? Can this
> > have an adverse affect?
> >
> >
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net
> > [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Bernd D.
> > Ratsch
> > Sent: Sunday, June 13, 2004 9:17 AM
> > To: dakota-truck@dakota-truck.net
> > Subject: DML: Setting Distributor Drive Timing (Fuel Sync) without DRB
> >
> >
> >
> > This is a base setting for those without a DRB or other scanner that
> > shows Fuel Sync...but you still should have it checked for proper
> > setting on
> Fuel
> > Sync. Correct procedure from DC as well.
> >
> >
> > Distributor Indexing
> >
> > SYMPTOM/CONDITION:
> > Vehicles may exhibit surging, light bucking, or intermittent engine
> > misfiring. This will most likely occur when the vehicle is at
> > operating temperature, and under a light load at approximately 2000
> > RPM. This condition may be caused by a mis-indexed distributor. The
> > following procedure is an alternative to the indexing procedure
> > outlined in the service manual.
> >
> > REPAIR PROCEDURE:
> > This procedure outlines an alternative distributor indexing procedure.
> >
> > Connect a voltmeter to the distributor sensor connector by removing
> > the
> end
> > seal and carefully back probing the connector. Connect the positive
> > lead
> to
> > the sensor output pin (pin 3, either a tan wire with a yellow tracer
> > or a gray wire, depending on vehicle application). Connect the
> > negative lead to the sensor ground pin (pin 2, a black wire with a
> > light blue tracer). Rotate the engine clockwise as viewed from the
> > front, until the number one piston is at Top Dead Center (TDC) of the
> > compression stroke. The timing mark on the vibration damper should
> > line up with the zero degree (TDC)
> mark
> > on the timing chain case cover.
> > Continue to rotate the engine slowly clockwise until the V6 or V8 mark
> > (depending on engine type) lines up with the zero degree (TDC) mark on
> > the timing chain case cover. The V8 mark is 17.5°after TDC and the V6
> > mark is 147°after TDC. NOTE: DO NOT ROTATE THE ENGINE COUNTER
> > CLOCKWISE. IF THE ENGINE IS ROTATED BEYOND THE MARK, RETURN TO STEP 2
> > AND REPEAT THE PROCEDURE. Loosen the distributor clamp bolt.
> > With the ignition switch in the ON position, rotate the distributor
> slightly
> > in either direction until the voltmeter switches between the sensor
> > transition point of 0 and 5 volts. Adjust the distributor as close as
> > possible to either side of this transition point and tighten the
> > distributor clamp bolt to 19-26 N-m (170-230 in.lbs.) .
> >
> >
>
>
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