Ignition Timing Check; Idle Speed Check - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

ENGINE - ENGINE -
On-vehicle Service On-vehicle Service

IGNITION TIMING CHECK

MUT-II
1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Turn the ignition switch to "LOCK" (OFF) position and
then connect the MUT-II to the diagnosis connector.
3. Set up a timing light.
4. Start the engine and run at idle.
5. Check that engine idle speed is within the standard value.
Standard value: 850 ± 100 r/min
6. Select No.17 of the MUT-II Actuator test.
7. Check that basic ignition timing is within the standard
value.
Standard value: 5_ BTDC ± 3_
8. If the basic ignition timing is outside the standard value,
inspect the MPI system while referring to GROUP 13A
- Troubleshooting.
9. Press the MUT-II clear key (Select a forced driving cancel
mode) to release the Actuator test.
Caution
If the test is not cancelled, a forced driving will
continue for 27 minutes. Driving under this condition
may damage the engine.
10. Check that ignition timing is at the standard value.
Standard value: approximately 5_BTDC
NOTE
(1) Ignition timing is variable within about ± 7, even under
normal operating.
(2) And
approximately 5_ from standard value at higher
altitudes.
11. Remove the timing light.
12. Turn the ignition switch to "LOCK" (OFF) position and
then remove the MUT-II.

IDLE SPEED CHECK

MUT-II
1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Turn the ignition switch to "LOCK" (OFF) position, and
then connect the MUT-II to the diagnosis connector.
3. Set the timing light.
4. Check that the basic ignition timing is within the standard
value.
it is automatically
11A-9
further advanced by