Repair [11/2021 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
- REPAIR INTAKE VALVE SEAT NOTE:
- Repair the intake valve seat while checking the seating position.
- Release the cutter gradually to make the intake valve seat smooth.
- Using a 45° cutter, resurface the intake valve seat so that the intake valve seat width is more than the standard.
- Using 30° and 60° cutters, correct the intake valve seat so that the intake valve contacts the entire circumference of the intake valve seat.
The contact should be in the center of the intake valve seat, and the intake valve seat width should be as specified around the entire circumference of the intake valve seat.
*a Standard Width Standard Width
1.1 to 1.5 mm (0.0433 to 0.0591 in.)
- Hand lap the intake valve and intake valve seat with an abrasive compound.
- Check the intake valve seating position.
- REPAIR EXHAUST VALVE SEAT NOTE:
- Repair the exhaust valve seat while checking the seating position.
- Release the cutter gradually to make the exhaust valve seat smooth.
- Using a 45° cutter, resurface the exhaust valve seat so that the exhaust valve seat width is more than the standard.
- Using 30° and 60° cutters, correct the exhaust valve seat so that the exhaust valve contacts the entire circumference of the exhaust valve seat.
The contact should be in the center of the exhaust valve seat, and the exhaust valve seat width should be as specified around the entire circumference of the exhaust valve seat.
*a Standard Width Standard Width
1.1 to 1.5 mm (0.0433 to 0.0591 in.)
- Hand lap the exhaust valve and exhaust valve seat with an abrasive compound.
- Check the exhaust valve seating position.