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 MANUALSDODGE AND RAM2023DURANGO R/T PLUS, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 3 (6.2L ENGINE (SERVICE INFORMATION))ENGINE BLOCKINSPECTIONCYLINDER BORE
2023 Dodge and Ram Durango R/T Plus, AWD
Cylinder Bore
2023 Dodge and Ram Durango R/T Plus, AWDSECTION Cylinder Bore
WARNING: This page is about a different variant/trim than selected.
- Use a cylinder bore gauge (2) to correctly measure the inside diameter of the cylinder bore (3). A cylinder bore gauge capable of reading in 0.003 mm (0.0001 in.) increments is required. If a bore gauge is not available, do not use an inside micrometer.
- Measure the inside diameter of the cylinder bore at three levels below the top of the bore (4). Start at the top of the bore, perpendicular (across or at 90°) to the axis of the crankshaft at point A (1).
- Repeat the measurement near the middle of the bore then repeat the measurement near the bottom of the bore.
- Determine the taper by subtracting the smaller diameter from the larger diameter.
- Rotate the measuring device 90° to point B (1) and repeat the three measurements. Verify that the maximum taper is within specifications.
- Determine out-of-roundness by comparing the difference between each measurement.
- If the cylinder bore taper does not exceed 0.0127 mm (0.0005 inch) and out-of-roundness does not exceed 0.008 mm (0.0003 inch) then the cylinder bore can be honed. If the cylinder bore taper or out-of-round condition exceeds the maximum limits, replace the engine block.
NOTE:
A slight amount of taper always exists in the cylinder bore after the engine has been in use for a period of time.
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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.