Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK1998LESABRE V6-3.8L VIN KREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON, ENGINE
1998 Buick LeSabre V6-3.8L VIN K
Piston, Engine
1998 Buick LeSabre V6-3.8L VIN KSECTION Piston, Engine
Clearance
(39 mm from Top of Piston) 0.010 - 0.051 mm (0.0004 - 0.0020 inch)
Piston Ring Groove Depth
Top Compression 4.019 - 4.146 mm (0.158 - 0.163 inch)
2nd Compression 4.214 - 4.341 mm (0.166 - 0.171 inch)
Oil Control 3.814 - 3.941 mm (0.150 - 0.155 inch)
(39 mm from Top of Piston) 0.010 - 0.051 mm (0.0004 - 0.0020 inch)
Piston Ring Groove Depth
Top Compression 4.019 - 4.146 mm (0.158 - 0.163 inch)
2nd Compression 4.214 - 4.341 mm (0.166 - 0.171 inch)
Oil Control 3.814 - 3.941 mm (0.150 - 0.155 inch)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.