Celica GT Ltd Ed Convertible L4-2164cc 2.2L DOHC MFI (1997)
Valve: Testing and Inspection
Valve Stems and Guide Bushings Inspection
1. Using a caliper gauge, measure the inside diameter of the guide bushing.
Bushing inside diameter: 6.010 - 6.030 mm (0.2366 - 0.2374 inch)
2. Using a micrometer, measure the diameter of the valve stem.
Valve stem diameter:
Intake: 5.970 - 5.985 mm (0.2350 - 0.2356 inch)
Exhaust: 5.965 - 5.980 mm (0.2348 - 0.2354 inch)
3. Subtract the valve stem diameter measurement from the guide bushing inside diameter measurement.
Standard oil clearance:
Intake: 0.025 - 0.060 mm (0.0010 - 0.0024 inch)
Exhaust: 0.030 - 0.065 mm (0.0012 - 0.0026 inch)
Maximum oil clearance:
Intake: 0.08 mm (0.0031 inch)
Exhaust: 0.10 mm (0.0033 inch)
If the clearance is greater than maximum, replace the valve and guide bushing.
