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1996 Sierra 4.3 Timing Question


Ratt643
07-23-2012, 03:51 PM
Just installed a new engine and it time to start it. I need to know where the tan wire with the black stripe is so i can set the initial timing. I dont see it in the engine compartment. But also seen that you jumper the ADLD to do this. Can someone please set the record straight?

gmtech1
07-23-2012, 04:36 PM
http://collision.alldata.com/alldata/imagesWLinks?file=//image300g/04/37/84_gc96ckbk1_6d4-006a.png&width=464&height=657&displayType=display&imgRotation=&links=
Distributor Installation and Removal



Procedure B

Remove or Disconnect

^ Make sure the ignition switch is "OFF."
^ Bring the engine up to Top Dead Center (TDC) of cylinder number 1. Make sure it is on the compression stroke.
A. Remove the distributor cap screws and cap to expose the rotor.

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http://collision.alldata.com/alldata/imagesWLinks?file=//imagebfl300f/07/79/37_gc00ck8by_6-702b.png&width=432&height=420&displayType=display&imgRotation=&links=

B. Align the pre-drilled indent hole in the distributor driven gear with the white painted alignment line on the lower portion of the shaft housing. The rotor segment should point to the cap hold area as shown in the illustration.
C. Using a long screw driver, align the oil pump drive shaft in the engine in the mating drive tab in the distributor.
D. Guide the distributor into place, making sure the the spark plug towers are perpendicular to the center line of the engine.

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http://collision.alldata.com/alldata/imagesWLinks?file=//image300e/15/06/44_gc97stbk2_6-387b.png&width=360&height=431&displayType=display&imgRotation=&links=Description


E. ONCE The DISTRIBUTOR IS FULLY SEATED, the rotor segment should be aligned with the pointer cast into the distributor base. This pointer will have a "6" cast into it, indicating the distributor is to be used in a 6 cylinder engine. if the rotor segment does not come within a few degrees of the pointer, the gear mesh between the distributor and camshaft may be off a tooth or more. If this is the case, repeat the procedure again to achieve proper alignment.

Install or Connect

1. Cap and mounting screws. Do not overtighten as the boss may strip.
2. Distributor mounting clamp and tighten to proper torque.

Tighten
^ Distributor clamp and bolt to 27 Nm (20 lbs. ft.)
^ Distributor cap screws to 4.5-5.0 Nm (40-45 lbs. in.)

3. Three wire hall effect switch plug to base of distributor.
4. Spark plug and coil leads to the distributor cap.
^ If a check engine light is illuminated after installing the distributor and a DTC P1345 is found, the distributor has been installed incorrectl


Don't see anything about the wire or aldl in this proceedure.

maxwedge
07-23-2012, 06:54 PM
Look up under the r/s of the dash behind the upper part of carpet, seem to remember seeing it there.

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