Fuel Injected

Connect a timing light to the engine. Start the engine and run at idle. Disconnect the vacuum hose from the distributor subdiaphragm and plug the hose end. Short terminals "T" and "E1" of the check connector. Check ignition timing.

IGNITION TIMING (CARBURETED)

Application	Timing: Vac. Plugged	Timing: Vac. Connected
Pickup	0° @ 950 RPM	12° @ 950 RPM
4Runner	5° @ 950 RPM	N/A

IGNITION TIMING (FUEL INJECTED)

Application	Timing: Vac. Plugged	Timing: Vac. Connected
22R	0° TDC @ Max. 950 RPM	N/A
22R-E & 22R-TE	5° BTDC @ Idle	N/A

Fig 1: Tach Hook-Up/Idle Speed & Timing Adjustments (22R Carbureted)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Tach Hook-Up/Idle Speed & Timing Adjustments (EFI & Turbo)

Fig 3: Ignition Timing Marks