XJR (X308) V8-4.0L SC (AJ26) (1998)
Valve Clearance: Adjustments
VALVE CLEARANCES - CHECK AND ADJUST
Tappet hold down tool 303-540
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. Disconnect the battery ground cable.
Remove the battery cover.
4. 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.
5. Check, and note the valve clearances.
6. Use a rag to wipe up as much oil as possible from the tappet wells.
7. Valve adjustment involves considerable repetition. A SUMMARY OF THE PROCEDURE follows:
Install the adjusting tool base plate to one cylinder head.
Rotate the crankshaft to position four valves ready for adjustment.
Use the attachment part of the special tool to adjust two valve clearances. Transfer the attachment and adjust the other two valve clearances.
Remove the attachment part from the adjusting tool base plate.
Repeat steps 2 to 4 three more times until all sixteen valves on the first cylinder head have been adjusted.
Repeat steps 1 to 5 for the other cylinder head.
Remove all equipment and reassemble the engine.
8. The following instructions describe the PROCEDURE FOR ADJUSTING THE VALVE CLEARANCES.