Specifications

Distributor Indexing - Without using a Scanner
(We highly recommend setting the Fuel-Sync with a scanner but this will work for an initial setting)
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.) .