Maintenace executed: Every 100.000 km
- Denso PK20R8, part no.: 90919-01180
Every 100.000 km the spark plugs need to be replaced. Toyota uses platinum spark plugs, so they are prety expensive. If you use elevated boost pressure on your engine, it might
be a good idea to use a colder grade spark plug to prevent detonation. Replace all four spark plugs at once.
The spark plugs
The spark plugs are connected via the high-tension cords to the distributor. Here is where the plugs are located on the 3S-GE engine:
Location of the spark plugs
And a close-up
Remove the three bolt and pull the high-tension cord at the rubber boot, not the wire. Pulling the wire might damage the conductor inside. Use a socket wrench with extention bar
and a sprak plug remover socket to remove the spark plugs
Socket wrench with extention bar and spark plug socket
Installation is in reverse order of removal. Torque the spark plugs to 18 Nm.
Old and new spark plugs
After changing the spark plugs the engine will probably be smoother running.