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.
Idle Speed & Ignition Timing
Ensure idle speed and ignition timing are set to specification. Improper setting of ignition timing and idle speed may cause driveability problems and/or false setting of trouble codes. For adjustment procedures, see the ADJUSTMENTS article.
| Application | (1) Idle RPM | (2) Idle RPM | (3) Maximum CO Level | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.6L | ||||||||||||
| A/T | (4) 750-850 | (4) 675-775 | 7.0% | |||||||||
| M/T | 625-725 | 575-675 | 7.0% | |||||||||
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| Application | Man. Trans. (Degrees BTDC @ RPM) | (1) Auto. Trans. (Degrees BTDC @ RPM) | ||
|---|---|---|---|---|
| Sentra | 6-10 @ 575-675 | 6-10 @ 675-775 | ||
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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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