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 MANUALSCHEVROLET1986SPORTVAN G20, 6.2 C, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 12 (6.5L V8 DIESEL & TURBO DIESEL - VINS [F,P,S,Y])OVERHAULCYLINDER BLOCK ASSEMBLYPISTON & ROD ASSEMBLY
1986 Chevrolet Sportvan G20, 6.2 C, Standard
Piston & Rod Assembly
1986 Chevrolet Sportvan G20, 6.2 C, StandardSECTION Piston & Rod Assembly
WARNING: This page does not describe the selected car, but rather 20 other vehicles, including the 1994 GMC Yukon, 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Suburban, and 1994 GMC Rally Camper Special. However, it is still accessible from the selected car via links, so may be relevant.
- Mark piston and rod assembly for installation to original bore. Mark rod and cap in relation to piston. Assemble rod to piston with rod bearing tang on same side of piston as piston crown indent.
- Properly position ring end gaps around circumference of piston. See Figure. Install piston and rod assembly in bore with piston crown indent toward outside of engine.
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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.