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.
2003 Acura 3.2TL BaseFACTORY OEM SERVICE PROCEDURE
Piston, Pin & Connecting Rod: Inspection
- Measure the diameter of the piston pin. See Fig 1 and PISTON PIN DIAMETER table.
- Zero the dial indicator to the piston pin diameter. See Fig 2
- Check the difference between the piston pin diameter and piston pin hole diameter on the piston. See Fig 3 and PISTON PIN-TO-PISTON CLEARANCE table.
- Measure the piston pin-to-connecting rod clearance. See Fig 4 and PISTON PIN-TO-CONNECTING ROD CLEARANCE table.
Factory Service Tools
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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.
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