Valve Clearance: Testing and Inspection

Valve Clearances - Check

Removal
1. Open the engine compartment and fit paintwork protection sheets. Open to the service position.
2. Carefully remove both engine covers, taking care not to damage the plastic fixings or the rubber Inserts.
3. Open the driver's door, or both doors if necessary, to allow the side glass to drop. Ensure that the doors remain open until after the battery has been disconnected.





4. Disconnect the battery ground cable.
Remove the battery cover.
5. Remove the cam cover from Bank 1 and Bank 2; including the purge valve, the on-plug ignition coils and the air intake tube/air flow meter/air cleaner cover assembly.
6. Rotate the crankshaft so that there are four valves which are 'off the cam' (cam lobes uppermost), so that their clearance may be measured.
7. Measure the gap on each of the four valves. Note which valve has been measured, along with its relevant clearance.
8. Rotate the crankshaft a small amount so that the next four valves are 'off the cam'. Measure and note the clearances.
Repeat this step a further six times, until all valve clearances have been measured and noted.

Installation
1. Install the cam covers and associated components.
2. Install the engine covers.
3. Move the engine compartment cover from the service position and connect the gas struts.
4. Remove the paint protection sheets and close the cover.
5. Connect the battery and install the battery cover.