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.
2000 Jeep TJ (CANADA) L6-4.0LFACTORY OEM SERVICE PROCEDURE
Piston Specifications
| Piston | Weight | less Pin | 14.7 - 15.1 |
| Ring Groove Height | Compression Ring | 0.0602 - 0.0612 | |
| Oil Control Rings | 0.1589 - 0.1598 | ||
| to Bore Clearance | 0.0008 - 0.0015 |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.