1987 Montero Service Manual, Page 8-111

IGNITION TIMING ADJUSTMENT FOR 2.6L ENGINE

Adjustment conditions:
Coolant temperature: 85 - 95~C (185 - 205~F)
Lamps and all accessories: Off
Transmission: N (Neutral) Set Parking Brake

1. Connect tachometer and timing light
2. Stan engine and run at curb idle speed.
3. When checking the basic ignition timing at high altitude [altitude of 1200 m (3900 ft.) or more], disconnect the vacuum how (white stripe) from the sub-vacuum chamber of the distributor and plug the hose end. Cars for 50 states and high altitude cars for 49 states excluding California



4. Check basic ignition timing and adjust if necessary.

Basic ignition timing: 7~ +/- 2~ BTDC
5. To adjust ignition timing, loosen distributor mounting nut and turn distributor housing.
6. After adjustment, securely tighten mounting nut.


7. When checking ignition timing at high altitude, connect the vacuum hose disconnected in Step 3 to the original position before making sure that the ignition timing has been advanced to the actual ignition timing.

Actual ignition timing: 12~ BTDC