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.
Ignition timing: 8 - 12° BTDC
HINT: Please refer to the hand-held tester operator's manual for further details.
c. When not using hand-held tester.
1 Using SST, connect terminals 13 (TC) and 4 (CG) of DLC3.
SST 09843-18040, 09843-18020
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 cylinder head cover No.2.
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.
^ After checking, be sure to tape the wire harness.
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: 5 - 15° BTDC
7 Confirm that ignition timing moves to advanced angle side when the engine rpm is increased.
8 Remove the timing light.