How to Adjust the Timing in a Nissan Altima

Adjusting the timing on a Nissan Altima with a distributed ignition system is easier than on many vehicles but still requires special tools and a clear understanding of engine mechanics. Nissan Altima models with distributorless ignition systems do not require maintenance and control the timing based on driving conditions.
Difficulty: Moderate
Instructions
Things You'll Need
Timing light
Wrenches
1

Locate the crankshaft pulley at the front of the Altima's engine and clean it off to expose the timing marks. Start the car and turn off any accessories such as climate control, lights and the radio. Allow the engine to idle until it reaches normal operating temperature.
2

Turn off the engine and connect a tachometer to the distributor per the manufacturer's instructions. Connect the timing light to the battery and then to the number one ignition wire. Start the engine and verify it's idling at 1,000 RPM. Adjust the idle speed if necessary.
3

Point the timing light at the crankshaft pulley to determine the amount of adjustment needed. Adjust the timing by loosening the distributor mounting bolts and turning the distributor until the crankshaft timing mark lines up with the middle line of the timing light.
4

Tighten the distributor mounting bolts and recheck the timing. Turn the Altima off and remove the tachometer and timing light. Reconnect the number one ignition wire.

Tips & Warnings

Never pierce the ignition wire as misfiring or crossfiring may result.

Always work on a running engine in a well ventilated space.

Take care to keep tools, wires and yourself away from the cooling fan at all times.