Idle Speed Check; Idle Mixture Check - Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement

ENGINE <4G1> –
16. Sealing tape is to be attached to the fitting nut only for
vehicles for Switzerland.
NOTE
Sealing tape is attached to all vehicles when new.

IDLE SPEED CHECK

1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Check the basic ignition timing. Adjust if necessary.
Standard value: 5 BTDC
3. After turning the ignition switch to OFF, connect the MUT-II
to the diagnosis connector.
4. Start the engine and run it at idle.
5. Run the engine at idle for 2 minutes.
6. Check the idle speed. Select item No. 22 and take a reading
of the idle speed.
Curb idle speed: 750
NOTE
The idle speed is controlled automatically by the idle speed
control (ISC) system.
7. If the idle speed is outside the standard value, inspect
the MPI components by referring to GROUP 13B –
Troubleshooting.

IDLE MIXTURE CHECK

1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Check that the basic ignition timing is within the standard
value.
Standard value: 5 BTDC
3. Turn the ignition switch to OFF and connect the MUT-II
to the diagnosis connector.
4. Start the engine and run it at 2,500 r/min for 2 minutes.
5. Set the CO, HC tester.
6. Check the CO contents and the HC contents at idle.
Standard value
On-vehicle Service
100 r/min
CO contents: 0.5 % or less
HC contents: 100 ppm or less
11B-11
11100190521
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11100210517
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