How do you set timing on 1982 Chevrolet s10 v6 pick up?

Setting the timing on a 1982 Chevrolet S10 V6 pickup is not a straightforward process like on older cars with purely mechanical distributors. This era likely uses a Computer Controlled (CC) distributor, meaning the timing is controlled by the engine control unit (ECU) and not directly adjustable by rotating the distributor. Trying to adjust it manually will likely damage the engine or prevent it from starting.

Instead of adjusting the distributor, troubleshooting a timing issue on a 1982 S10 V6 involves checking several components and potentially using diagnostic equipment:

1. Check the Computer/ECU: The ECU is the brain of the operation. A faulty ECU can cause erratic timing. This is very difficult to test without specialized equipment.

2. Check the Crankshaft Position Sensor (CKP): The CKP sensor tells the ECU where the crankshaft is in its rotation. A bad CKP will result in incorrect timing. You'll need a service manual or diagnostic tool to test it, checking for the correct signal voltage.

3. Check the Distributor Pickup Coil: This sensor in the distributor provides the signal to the ECU for the ignition timing. A bad coil will lead to incorrect timing or misfires. Again, a service manual or multimeter is necessary for testing.

4. Check the Ignition Control Module (ICM): The ICM is often integrated into the distributor or a separate module. It receives signals from the ECU and controls the ignition timing. A faulty ICM can cause timing problems and needs specialized testing.

5. Check for Vacuum Leaks: Vacuum leaks affect the engine's performance and can indirectly affect timing if the system is vacuum-controlled in any aspect (some systems use vacuum advance).

6. Check the Throttle Position Sensor (TPS): An inaccurate TPS reading can cause the ECU to miscalculate timing.

7. Use a Scanner: The best approach is using a scan tool capable of reading the engine's data. This will show any error codes (diagnostic trouble codes or DTCs) related to the ignition system, sensors or ECU. The codes will pinpoint the problem area much more effectively than random component replacement.

In summary: You don't "set" the timing in the traditional sense. Instead, you must diagnose the underlying problem causing incorrect timing. Attempting to adjust the distributor directly will almost certainly make the situation worse. Seek out a repair manual specific to your 1982 S10 V6 engine to properly test the components. A professional mechanic with a scan tool will diagnose the problem much faster and more efficiently.