Ignition Timing: Testing and Inspection
INSPECT IGNITION TIMINGa) Warm up the engine.
b) When using the hand-held tester:
Check the ignition timing.
1) Connect the hand-held tester to the DLC3.
2) Enter DATA LIST MODE on the hand-held tester.
Ignition timing: 8 to 12° BTDC @ idle
HINT: Please refer to the hand-held tester operator's manual for help on selecting the DATA LIST.
c) When not using the hand-held tester:
Check the ignition timing.
1) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
SST 09843-18040
NOTICE:
^ Confirm the terminal numbers before connecting them. Connection with a wrong terminal can damage the engine.
^ Turn off all electrical systems before connecting the terminals.
^ Perform this inspection after the cooling fan motor is turned off.
2) Remove the V-bank cover.
3) Pull out the black lead wire harness as shown in the illustration.
4) Connect the tester terminal of the timing light to the engine.
NOTICE: Use a timing light which detects the first signal.
5) Check the ignition timing at idle.
Ignition timing: 8 to 12° BTDC @ idle
NOTICE: When checking the ignition timing, the transmission should be in the neutral position.
HINT: Run the engine at 1,000 to 1,300 rpm for 5 seconds, and then check that the engine rpm returns to idle speed.
6) Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
7) Check the ignition timing at idle.
Ignition timing: 7 to 24° BTDC @ idle
8) Confirm that the ignition timing moves to the advanced angle side when the engine rpm is increased.
9) Remove the timing light.