Stanza L4-2389cc 2.4L SOHC MFI (KA24E) (1991)
Valve: Testing and Inspection
Valve Guide Clearance
1. Measure valve deflection in a right-angled direction with camshaft. (Valve and valve guide mostly wear in this direction.)
Valve deflection limit (Dial gauge reading):
0.15 mm (0.0059 in)
Valve Stem Diameter
2. If it exceeds the limit, check valve to valve guide clearance.
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Measure valve stem diameter and valve guide inner diameter.
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Check that clearance is within specification.
Valve to valve guide clearance:
Intake: 0.020 - 0.053 mm (0.0008 - 0.0021 in)
Limit: 0.1 mm (0.004 in)
Exhaust: 0.040 - 0.070 mm (0.0016 - 0.0028 in)
Limit: 0.1 mm (0.004 in)
3. Check valve seats for any evidence of pitting at valve contact surface, and reseat or replace if it has worn out excessively.
Valve Seat Face Angles
4. Check valve seating condition.
Seat face angle: 45°.
Contacting width "W":
Intake: 1.6 - 1.7 mm (0.063 - 0.067 In)
Exhaust: 1.7 - 2.1 mm (0.067 - 0.083 In)