Re: RE: RE: Setting Distributor Drive Timing (Fuel Sync) without DRB

From: BlackDak93 (stephen.barnett@worldnet.att.net)
Date: Sun Jun 13 2004 - 14:16:09 EDT


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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