Ignition Timing: Testing and Inspection
INSPECT IGNITION TIMINGa. Warm up engine.
b. When using hand-held tester.
1) Connect the hand-held tester to the DLC3.
HINT: Please refer to the hand-held tester operator's manual for further details.
Ignition timing: 8 - 12° BTDC
c. When not using hand-held tester.
1) Using SST, connect terminals 13 (TC) and 4 (CG) of DLC3.
SST 09843-18040
NOTICE:
^ Be sure not to connect incorrectly. It causes breakage of the engine.
^ Turn OFF all electrical systems.
^ Operate the inspection when the cooling fan motor is turned OFF.
2) Remove the V-bank cover.
3) Pull out the wire harness as shown in the illustration.
Connect the clip of the timing light to the engine.
NOTICE: Use a timing light which can detect the first signal.
4) Inspect ignition timing at idle.
Ignition timing: 8 - 12° BTDC
NOTICE: When checking the ignition timing, the transmission is at neutral position.
HINT: After engine rpm is kept at 1,000 - 1,300 r/min. for 5 seconds, check that it returns idle speed.
5) Disconnect terminals 13 (TC) and 4 (CG) of DLC3.
6) Inspect ignition timing at idle.
Ignition timing: 7 - 24° BTDC
7) Confirm that ignition timing moves to advanced angle side when the engine rpm is increased.
8) Remove the timing light.