Ignition Timing: Adjustments

The ignition timing and engine idling speed must be checked and adjusted with the engine running under the following conditions.
- Engine must be thoroughly warmed up.
- Throttle must be completely closed and idle contact on.
- Keep front wheels straight ahead, if equipped with power steering.
- Air conditioner turned off (if so equipped)
- Engage parking brake.
- Place transmission in neutral.
- Automatic transmission in either "N" or "P" range

1. Apply the parking brake and block drive wheels.
2. Start the engine.
- Make all adjustments with engine at normal operating temperature choke full open air cleaner installed all accessories off and transmission in neutral.





3. Evaporative emission canister purge line and Exhaust Gas Recirculation (EGR) vacuum line disconnected and plugged.
4. Connect the timing light lead to the No. 1 spark plug wire.

Timing Mark:

5. Aim the timing light at the crankshaft pulley notched line.

Ignition timing: 6° at 900 rpm






6. If out of specification, loosen the mounting bolt on the distributor, turn the distributor clockwise or counterclockwise to adjust the timing. After adjustment, tighten the bolt to the specified torque.

Torque: 19 N m (14 Lb.ft.)

7. Seal off hot idle compensator vacuum hose by bending the hose.
8. Adjust carburetor idle speed screw to obtain proper idle speed.

Idle speed: 900 rpm

9. If Air conditioner (A/C) is installed, turn A/C on max cold and high blower open throttle momentarily to assure solenoid is fully extended. Adjust screw on throttle lever to 900 rpm. Turn A/C off.
10. Release hot idle compensator hose.
11. Stop engine.
12. Unplug and reconnect all vacuum hoses.