Tacoma 2WD V6-3.4L (5VZ-FE) (1995)
Piston: Testing and Inspection
Inspect Ring Groove Clearance
Using a feeler gauge, measure the clearance between new piston ring and the wall of the piston ring groove.
Ring groove clearance:
No. 1: 0.0.040 - 0.080 mm (0.0016 - 0.0031 inch)
No. 2: 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
If the clearance is not as specified, replace the piston.