IGNITION TIMING

MARTWEIN

MEMBER
1999 NISSAN FRONTIER
2.4L
4 CYL
2WD
AUTOMATIC
134,000 MILES

I have a 2.4L. I am wanting to check and adjust timing if needed on my truck. I can't find the timing indicator tab. I have looked all around the crankshaft pulley. How am I missing it? If someone could tell me where it is located, or have a diagram it would be greatly appreciated!

Thanks,

Mark

1 Reply

OBXAUTOMEDIC

MECHANIC
3,711 POSTS

Hello,

Start engine and warm to normal operating temperature. Ensure idle speed is less than 1000 RPM. Run engine at 2000 RPM under no load for 2 minutes. Check for Diagnostic Trouble Codes (DTCs).

If any DTCs are present, perform diagnosis for DTC(s). See appropriate SELF-DIAGNOSTICS article. If no DTCs are present, run engine at 2000 RPM under no load for 2 minutes. Release throttle. Increase engine speed to 2000 RPM, 2 or 3 times, then allow engine to idle for one minute.

Turn ignition off. Disconnect Throttle Position (TP) sensor harness connector. Start engine and increase engine speed to 2000 RPM 2 or 3 times. Release throttle. Check ignition timing.

On all models except Maxima, if ignition timing is incorrect, loosen hold-down bolt and turn distributor to adjust ignition timing. On Maxima, ignition timing is not adjustable. If ignition timing is incorrect, check CMP sensor and both CKP sensors.

Altima & Frontier (4-Cyl.) 18-22 degrees BTDC

Base Idle with tranny in neutral should be 700 - 800

Target Idle with tranny in neutral is 750 - 850

Image (Click to make bigger)