Ignition timing marks location

Good afternoon,

The timing without being put in base timing is over 15 degrees which is off the scale.

You need to check the timing with it in base timing. It should be 5 plus or minus 2 degrees.

Roy

ADJUSTMENT CONDITIONS:

Coolant temperature at 176°F-205°F.
All accessories turned OFF.
Transmission in N (Neutral).
Parking Brake, ON.

PROCEDURE:

Tachometer Hookup
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1. Install a paper clip into the tachometer check connector.
2. Connect a tachometer to the clip.

Ignition Timing Adjustment Connector
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3. With the engine OFF, ground the ignition timing adjustment terminal with a jumper lead.
4. Start the engine and allow it to run at curb idle speed.
5. Connect a timing light to the #1 spark plug wire and check the timing.

Basic Ignition Timing

5° ±2° BTDC.


6. If necessary loosen the distributor mounting nut and adjust timing by rotating the distributor.
7. Stop the engine.
8. Disconnect the ignition timing jumper wire and RE-START the engine.
9. Recheck the timing.


Actual Ignition Timing

15° BTDC.


NOTE: Actual ignition timing may vary slightly under the direction of the MPI controller. If necessary re-check Basic Ignition Timing. If it is still correct no further action is required.