How to adjust ignition timing for conventional ignition systems?

It is best to use a professional timing gun. The steps are roughly as follows

1. Find the timing marks. If it is dirty or not clear, please clean it first, or use white paint or chalk to paint it.

2. Connect the timing gun, the timing gun has a sensor clip, used to clip on the high-voltage wire, sensing the ignition pulse. It is usually connected to the first cylinder of the engine.

3. Start the car and bring it up to operating temperature. Start the car, bring it up to operating temperature, and allow it to reach the vehicle manufacturer's recommended tuning rpm

4. Light the timing gun, align it with the timing marks, and observe the reading on the timing marks. Compare the reading with the vehicle manufacturer's specifications and make adjustments if the specifications do not match.

5. Turn off the engine

6. Loosen the screw at the bottom of the distributor so that the distributor can rotate back and forth, but don't loosen the screw so much that the distributor turns freely.

7.Start the engine and reach the tuning speed.

8. Align the timing gun light with the timing mark and rotate the distributor left and right until the timing mark reads the specified value. And turn off the engine.

9. Tighten the distributor, taking care not to change the position of the distributor.

10.Start the engine and check the timing again.

The above answer is provided by Baidu Yauah

"Taiwan Trisoc Specialty"

I hope it can help you.