NX, Sentra & 240SX
- Start engine and warm to normal operating temperature (coolant gauge needle in middle). Run engine at 2000 RPM for 2 minutes. Perform self-diagnostic procedure. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section. Check for smooth engine operation.
- Increase engine speed to 2000 RPM, 2 or 3 times, then allow engine to return to idle. Check ignition timing. See 4-CYLINDER IGNITION TIMING table. See Fig 1
. If ignition timing is correct, check idle speed and mixture.
- If ignition timing is incorrect, disconnect throttle position sensor harness connector. Increase engine speed to 2000 RPM, 2 or 3 times, then allow engine to return to idle.
- Loosen hold-down bolt and turn distributor to adjust ignition timing. With ignition timing correctly set, reconnect throttle position sensor. Recheck ignition timing using step 2).
4-CYLINDER IGNITION TIMING (Degrees BTDC@RPM)
| Application |
Man. Trans. |
Auto. Trans. |
| Pickup |
10@750-850 |
10@750-850 |
| NX & Sentra |
| 1.6L |
10@550-650 |
10@675-775 |
| 2.0L |
15@700-800 |
15@700-800 |
| Stanza |
15@650-750 |
15@650-750 |
| 240SX |
20@600-700 |
20@600-700 |