1. Disconnect the negative (-) battery cable. This is crucial to prevent accidental shorts and damage to the electronic components.
2. Locate the distributor cap. It's usually a cylindrical or slightly squared-off black plastic component atop the distributor, which is located near the firewall on the passenger side of the engine. You'll see several wires connected to the top.
3. Locate the cap retaining clips. These are usually small metal clips or a single spring-loaded clamp that holds the cap in place. Carefully inspect the cap for these. Sometimes they're subtle.
4. Remove the retaining clips or clamp. Gently pry them up or loosen them using a small flat-head screwdriver or your fingers. Be gentle to avoid breaking the clips.
5. Gently lift the distributor cap straight up. Once the clips are removed, the cap should lift off relatively easily. There may be some slight resistance. Don't twist or force it. If it's stuck, re-check for any remaining clips.
6. Inspect the rotor. Once the cap is off, inspect the rotor (the spinning component inside the distributor) for any damage or wear.
Important Considerations:
* Wires: Take note of the position of the wires on the cap before removing it. They correspond to the firing order of the cylinders. Draw a diagram or take a picture to ensure you reconnect them correctly later. Mis-wiring can cause serious engine damage.
* Don't touch the rotor or terminals: These components are relatively high voltage even with the ignition off.
* Cleanliness: Clean the cap terminals and the rotor with a contact cleaner spray designed for automotive use. Avoid using abrasive cleaners.
Remember to reassemble everything in reverse order, ensuring the wires are correctly connected. If you are unsure about any step, consult a repair manual specific to your 1998 Chevy S10 2.2L engine.
