* Feeler gauge
* 10mm wrench
* 12mm wrench
* Flathead screwdriver
Step 1: Preparing the Engine
1. Allow the engine to cool down completely.
2. Remove the engine cover.
3. Locate the valve cover on the top of the engine.
4. Remove the valve cover bolts using a 10mm wrench.
5. Lift off the valve cover and set it aside.
Step 2: Measuring the Valve Clearance
1. Identify the intake and exhaust valves. The intake valves are located on the front side of the engine, while the exhaust valves are located on the rear side.
2. Use a 12mm wrench to turn the crankshaft pulley clockwise until the timing mark on the crankshaft pulley aligns with the "0" mark on the timing belt cover.
3. Insert the feeler gauge between the rocker arm and the valve stem. The clearance should be between 0.008 and 0.012 inches (0.20 and 0.30 mm) for the intake valves and 0.012 and 0.016 inches (0.30 and 0.40 mm) for the exhaust valves.
Step 3: Adjusting the Valve Clearance
If the valve clearance is not within the specified range, you will need to adjust it.
1. Use a flathead screwdriver to loosen the locknut on the rocker arm.
2. Turn the adjusting screw until the feeler gauge fits snugly between the rocker arm and the valve stem.
3. Hold the adjusting screw in place and tighten the locknut.
4. Repeat steps 2 and 3 for all the valves that require adjustment.
Step 4: Reassembling the Engine
1. Replace the valve cover and install the valve cover bolts.
2. Tighten the valve cover bolts to the specified torque (6.5 ft-lbs / 9 Nm).
3. Replace the engine cover.
Step 5: Starting the Engine and Checking for Proper Clearance
1. Start the engine and let it run for a few minutes.
2. Listen for any unusual noises. If you hear any ticking or tapping sounds, the valve clearance may be too tight.
3. If you hear any unusual noises, recheck the valve clearance and make any necessary adjustments.
