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.
2020 Acura RDX BaseFACTORY OEM SERVICE PROCEDURE
Engine Electrical Service Specifications
| Item | Measurement | Qualification | Standard or New | Service Limit |
|---|---|---|---|---|
| Ignition coil | Firing order | - | 1-3-4-2 | |
| Spark plug | Gap | - | 0.70-0.75 mm (0.0276-0.0295 in) | - |
| Ignition timing | At idle Check the red mark | In N or P | 2+/-2 deg. ATDC (conversion value by HDS: -2+/-2 deg.) | |
| Drive belt | Tension | - | Auto-tensioner | |
| Alternator | Brush length | - | 10.5 mm (0.413 in) | 1.5 mm (0.059 in) |
| Starter | Commutator mica depth | - | 0.40-0.50 mm (0.0157-0.0197 in) | 0.15 mm (0.0059 in) |
| Commutator runout | - | 0.02 mm (0.0008 in) max. | 0.05 mm (0.0020 in) | |
| Commutator O.D. | - | 28.0-28.1 mm (1.102-1.106 in) | 27.5 mm (1.083 in) | |
| Brush length | - | 11.1-11.5 mm (0.437-0.453 in) | 4.3 mm (0.169 in) | |
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.