Tools and Materials Needed:
1. Replacement distributor or distributor cap (if only the cap needs replacement).
2. Flat-head screwdriver.
3. 12-millimeter (mm) socket wrench or combination wrench.
4. 10-mm socket wrench or combination wrench.
5. Phillips-head screwdriver.
6. Timing light (Optional, for accurate ignition timing adjustment).
Procedure:
1. Preparation:
- Remove the negative terminal cable from your battery. This is a safety precaution to prevent any electrical accidents during the replacement process.
2. Locate the Distributor:
- The distributor is typically found on one side of the engine bay. It has multiple spark plug wires connected to it.
3. Remove Distributor Cap:
- Use a flat-head screwdriver to pry open the distributor cap latches.
- Remove the cap by gently lifting it off the distributor.
4. Locate and Mark Reference Points:
- With the distributor cap removed, you will see a rotor inside.
- You'll also see either a dot, notch, or groove on the rotor and a corresponding reference point on the distributor housing.
- Use a felt-tipped pen to mark these reference points, as they are crucial for maintaining the proper ignition timing.
5. Remove the Distributor:
- Use a 12-mm socket wrench to loosen (but not fully remove) the bolts or nuts that hold the distributor in place.
- Some models may have a single bolt, while others may have two bolts.
- Once loosened, carefully lift the distributor straight up and out of the engine.
6. Distributor Replacement or Cap Replacement:
- If replacing the entire distributor, align the reference marks made earlier and gently insert the new distributor into its housing.
- If only replacing the cap, transfer the internals (rotor, condenser, etc.) from the old cap to the new cap and reconnect the spark plug wires.
7. Finger Tighten the Distributor:
- Hand-tighten the distributor mounting bolts or nuts. Do not fully tighten them at this stage.
8. Reattach the Distributor Cap:
- Ensure the correct alignment of the rotor with the reference point, then replace and secure the distributor cap.
9. Tighten Distributor Bolts:
- Use a 12-mm socket wrench to fully tighten the distributor mounting bolts or nuts.
10. Connect Spark Plug Wires:
- Refer to the vehicle's owner manual or a wiring diagram to ensure proper placement and connection of the spark plug wires.
- Make sure each wire is securely attached to the corresponding spark plug.
11. Reconnect the Battery:
- Reattach the negative terminal cable to your battery.
Ignition Timing Adjustment (Optional):
If you have a timing light, you can now fine-tune the ignition timing of the engine. This might vary based on your specific vehicle model. Here are some general steps:
- Start the engine and let it reach normal operating temperature.
- Connect the timing light according to the manufacturer's instructions.
- Aim the timing light at the reference markings on the engine and distributor.
- Adjust the distributor slightly by loosening the mounting bolts and rotating it if needed.
- Tighten the distributor mounting bolts when the timing is set correctly.
Note: If you're not confident in performing these tasks or do not have the proper tools, it's recommended to have the distributor replaced by a qualified mechanic. The ignition timing should also be set by a professional if you don't have the necessary equipment.
