SX4 4WD L4-2.0L (2008)
Piston: Service and Repair
Pistons, Piston Rings, Connecting Rods and Cylinders Inspection and Cleaning
Pistons, Piston Rings, Connecting Rods and Cylinders Inspection and Cleaning
Inspection
Cylinder
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Inspect cylinder walls for scratches, roughness, or ridges which indicate excessive wear. If cylinder bore is very rough or deeply scratched, or
ridged, rebore cylinder and use over size piston.
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Using a cylinder gauge, measure cylinder bore in thrust and axial directions at two positions as shown in figure.
If any of following conditions is noted, rebore cylinder.
1. Cylinder bore diameter exceeds limit.
2. Difference of measurements at two positions exceeds taper limit.
3. Difference between thrust and axial measurements exceeds out-of-round limit.
Cylinder bore diameter
Standard: 84.000 - 84.020 mm (3.3070 - 3.3078 in.)
Limit: 84.050 mm (3.3090 in.)
Taper and out-of-round
Limit: 0.10 mm (0.004 in.)
NOTE: If any one of four cylinders has to be rebored, rebore all four to the same next oversize. This is necessary for the sake of uniformity
and balance.