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 base ignition timing are set to specification. See IDLE SPEED SPECIFICATIONS and IGNITION TIMING SPECIFICATIONS tables. If adjustment is necessary, see ADJUSTMENTS article.
| Application | Man. Trans. RPM | (1) Auto. Trans. RPM | |||||||
|---|---|---|---|---|---|---|---|---|---|
| B2500 | (2) | (2) | |||||||
| B3000 | 825-875 | 875-925 | |||||||
| B4000 | 800-850 | 725-775 | |||||||
| Millenia | N/A | 600-700 | |||||||
| MPV | N/A | 760-800 | |||||||
| Protege (3) | |||||||||
| 1.5L | 650-750 | 700-800 | |||||||
| 1.8L | 700-800 | 700-800 | |||||||
| 626 | |||||||||
| 2.0L | 550-850 | 500-800 | |||||||
| 2.5L | 550-750 | 550-750 | |||||||
|
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| Application | Man. Trans. Degrees BTDC @ RPM | (1) Auto. Trans. Degrees BTDC @ RPM | |||||
|---|---|---|---|---|---|---|---|
| B2500 & B3000 | 8-10 @ Idle | 8-10 @ Idle | |||||
| B4000 | 8-10 @ Idle | 8-10 @ Idle | |||||
| Millenia (2) | |||||||
| 2.3L | N/A | 6-8 @ 650 | |||||
| 2.5L | N/A | 9-11 @ 650 | |||||
| MPV | N/A | 10-12 @ 500-900 | |||||
| 626 | |||||||
| 2.0L | 6-18 @ 550-850 | 6-18 @ 500-800 | |||||
| 2.5L | 4-16 @ 550-750 | 4-16 @ 550-750 | |||||
| Protege (2) | |||||||
| 1.5L | 9-11 @ 700 | 9-11 @ 750 | |||||
| 1.8L | -1-1 @ 750 | -1-1 @ 750 | |||||
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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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