* A timing light
* A wrench
* A screwdriver
1. Locate the timing mark on the crankshaft pulley. It is usually a small notch or line.
2. Locate the timing mark on the engine block. It is usually a small arrow or hash mark.
3. Connect the timing light to the battery and the spark plug wire for the number one cylinder.
4. Start the engine and let it idle.
5. Shine the timing light onto the crankshaft pulley and engine block.
6. The timing marks should be aligned with each other. If they are not, you will need to adjust the timing.
7. To adjust the timing, loosen the bolt on the distributor.
8. Turn the distributor until the timing marks are aligned.
9. Tighten the distributor bolt.
10. Recheck the timing to make sure that it is correct.
Here are some additional tips for setting the timing on a 1989 4WD Chevy pickup:
* Make sure that the engine is at operating temperature before you set the timing.
* If the engine is not at operating temperature, the timing will be incorrect.
* Be careful not to over-tighten the distributor bolt.
* If you over-tighten the distributor bolt, you could damage the distributor.
