Tools Needed:
- 10mm socket wrench
- Combination wrenches (11mm, 13mm, 14mm)
- Long socket extension
- Feeler gauge
- Flathead screwdriver
Procedure:
1. Engine Preparation:
- Park the vehicle on a level surface and turn off the engine.
- Engage the parking brake and place the gear selector in "Park" (for automatic transmission) or "1st gear" (for manual transmission).
2. Remove Timing Cover:
- Locate the timing cover on the engine. It is usually a metal cover on the side of the engine block, near the oil filter.
- Use the 10mm socket wrench to remove the bolts securing the timing cover.
- Carefully remove the timing cover.
3. Locate the Cam Shaft:
- After removing the timing cover, you will expose the cam shaft. The cam shaft is the rod-like part with lobes that controls the opening and closing of valves.
4. Find TDC:
- Turn the crankshaft pulley clockwise until the timing mark on the pulley aligns with the index mark on the engine block. This indicates the piston of the first cylinder is at Top Dead Center (TDC) of its compression stroke.
5. Set Valve Clearance:
- Using a feeler gauge, check the clearance between the valve stem and the cam lobe for both intake and exhaust valves on the first cylinder. The clearance specification is usually provided in the vehicle's service manual or Haynes repair manual.
- If the clearance is not within the specified range, adjust the valve clearance by turning the adjusting screw on the rocker arm until you achieve the correct gap.
- Use the 13mm and 14mm wrenches to loosen and tighten the locknut of the adjusting screw as needed.
6. Repeat for Other Valves:
- Follow steps 4 and 5 to check and adjust the valve clearance for all other valves in the firing order sequence (usually 1-3-4-2).
7. Reinstall Timing Cover:
- After all valves are adjusted, carefully reinstall the timing cover and secure it using the bolts removed earlier.
8. Start the Engine:
- Reconnect the battery if you disconnected it earlier.
- Start the engine and let it run for a few minutes. Listen for any unusual engine noises. If the engine is running smoothly, the valve adjustment is done correctly.
Note: This guide is general and may not cover all specific details of your Daewoo Espero model. Always refer to the service manual or consult with a qualified auto mechanic if you have any doubts about performing the procedure. Incorrect valve adjustments can lead to engine problems, so it's important to follow the right procedures and specifications.
