Ignition Timing Check And Adjustment - Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement

11B-10
Engine tachometer
<LHD>
conector
<RHD>
Engine tachometer
conector
Ignition timing adjustment
connector (brown)
Jumper wire
ENGINE <4G1> –

IGNITION TIMING CHECK AND ADJUSTMENT

1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Insert a paper clip from the harness side into the engine
tachometer connector (1-pin connector) as shown.
3. Connect a primary voltage-detection type of tachometer
to the paper clip.
NOTE
Do not use the MUT-II.
If tested with the MUT-II connected to the diagnosis
connector, the ignition timing will not be the basic timing
but be ordinary timing.
4. Set up a timing light.
5. Start the engine and run it at idle.
6. Check that engine idle speed is within the standard value.
Standard value: 750
7. Turn the ignition switch to OFF.
8. Remove the waterproof connector from the ignition timing
adjustment connector (brown).
9. Connect the jumper wire with a clip to the ignition timing
adjustment terminal, and earth this to the body as
illustrated.
NOTE
Earthing this terminal sets the engine to the basic ignition
timing.
10. Start the engine and run it at idle.
11. Check that basic ignition timing is within the standard value.
Standard value: 5 BTDC
12. If not within the standard value, loosen distributor mounting
bolt and adjust by rotating distributor body.
13. Tighten mounting bolt after adjusting.
Tightening torque: 12 Nm
14. Stop the engine, remove the jumper wire from the ignition
timing adjustment connector (brown), and return the
connector to its original condition.
15. Start the engine and check that ignition timing at the
standard value.
Standard value: Approx. 10 BTDC
NOTE
(1) Ignition timing is variable within about 7 , even under
(2) And it is automatically further advanced by about 5
On-vehicle Service
100 r/min.
normal operating.
from 10 BTDC at higher altitudes.
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