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 MANUALSFORD1999EXPLORER 4WD V6-4.0L VIN EREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYSYSTEM SPECIFICATIONSPISTON RING
1999 Ford Explorer 4WD V6-4.0L VIN E
Piston Ring
1999 Ford Explorer 4WD V6-4.0L VIN ESECTION Piston Ring
| Top compression ring width | 0.062 - 0.063 Inch (in) |
| Bottom compression ring width | 0.068 - 0.069 Inch (in) |
| Top compression side clearance | 0.002 - 0.003 Inch (in) |
| Bottom compression side clearance | 0.002 - 0.003 Inch (in) |
| Top compression ring gap | 0.008 - 0.018 Inch (in) |
| Bottom compression ring gap | 0.018 - 0.028 Inch (in) |
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.