Tools You'll Need:
* Socket set: Various sizes, likely including 10mm, and possibly 8mm.
* Wrench set: May be needed for stubborn bolts.
* Ratchet and extensions: For easier access to bolts.
* Flathead screwdriver: Potentially to help pry up the cover if it's stuck.
* Shop towels or rags: To clean up any spilled oil.
* Drain pan: To catch any oil that might spill.
* Gloves: To keep your hands clean.
* Repair manual: Crucial for specific torque values and potential variations.
Procedure:
1. Disconnect the Negative Battery Terminal: This is crucial to prevent electrical shorts.
2. Locate the Valve Cover: It's situated on top of the engine.
3. Remove the Air Cleaner Assembly: This will give you better access to the valve cover. The steps for this will vary slightly depending on your exact configuration. Consult your repair manual.
4. Remove the PCV Valve Hose(s): Disconnect the PCV valve hose(s) from the valve cover.
5. Remove the Spark Plug Wires (Optional but Recommended): Carefully remove the spark plug wires from the spark plugs. Make note of their order (take a picture) to ensure correct reinstallation. This reduces the risk of accidentally damaging them.
6. Remove the Valve Cover Bolts: These are usually located around the perimeter of the valve cover. Use the appropriate size socket to loosen and remove them. They may be tight, so use a ratchet and extension if needed. Proceed carefully; some bolts may be hidden under components.
7. Gently Lift the Valve Cover: Once all the bolts are removed, the valve cover should lift off. It may be slightly stuck due to dried gasket material. Use a flathead screwdriver (gently!) to pry it up if necessary, working your way around the perimeter.
8. Inspect the Gasket: The old gasket will likely be stuck to either the valve cover or the engine head. Carefully remove any remaining gasket material from both surfaces. Clean them thoroughly to ensure a good seal with the new gasket.
9. Install the New Gasket (if needed): If replacing the gasket, carefully install the new gasket onto the engine block, ensuring it is properly seated.
10. Reinstall the Valve Cover: Align the valve cover and gently lower it into place.
11. Replace the Bolts: Tighten the valve cover bolts in a star pattern (or as specified in your repair manual) to ensure even pressure and prevent warping. Do not overtighten. Use the correct torque specification from your repair manual.
12. Reconnect Spark Plug Wires (if removed): Re-attach the spark plug wires in the correct order.
13. Reconnect PCV Valve Hose(s): Reattach the PCV valve hose(s).
14. Reinstall the Air Cleaner Assembly: Put the air cleaner assembly back in place.
15. Reconnect the Battery Terminal: Reconnect the negative battery terminal.
16. Check for Leaks: Start the engine and let it run for a few minutes, then carefully check for any leaks around the valve cover.
Important Notes:
* Repair Manual: A repair manual specific to your 1999 Oldsmobile Intrigue is highly recommended. It will provide detailed instructions, torque specifications, and diagrams specific to your vehicle's engine.
* Safety First: Always disconnect the negative battery terminal before starting any work on the electrical system. Be careful not to damage any components.
* Cleanliness: Keep your work area clean to prevent dirt or debris from entering the engine.
If you are not comfortable performing this repair yourself, it is best to take your vehicle to a qualified mechanic. Improper installation can lead to engine damage.
