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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Piston Ring, Engine
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Piston Ring, Engine
| Compression Ring End Gap Measured In Cylinder Bore | Top Groove | Production | 0.010-0.016 |
| Service | MAX 0.19 | ||
| Second Groove | Production | MAX 0.018-0.026 | |
| Service | MAX 0.31 | ||
| Compression Ring Groove Clearance | Top Groove | Production | 0.0012-0.0027 |
| Second Groove | Production | 0.0015-0.0031 | |
| Service | MAX 0.0033 | ||
| Oil Ring Gap | Production | 0.010-0.029 | |
| Service | MAX 0.035 | ||
| Oil Ring Grove Clearance | Production | 0.0018-0.0037 | |
| Clearance | MAX 0.0039 |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.