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
Cylinder Block Specifications
| Bearing Journal Diameter | Number 1 | 2.029-2.030 |
| Number 2 | 2.019-2.020 | |
| Number 3 | 2.009-2.010 | |
| Number 4 | 1.999-2.000 | |
| Deck | Height | 9.450-9.456 |
| Cylinder Bore Diameter | Standard | 3.8759-3.8775 |
| Taper | 0.001 | |
| Out-of-Round | 0.001 | |
| Tappet Bore | Diameter | 0.9055-0.9065 |
| Flatness | Standard per 1 inch | 0.001 |
| Standard per 6 inch | 0.002 | |
| Max. per total Length | 0.008 | |
| Main Bearing Bore | Diameter | 2.691-2.692 |
Factory Service Tools
Use the Manual With the Right Hardware
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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.