Ignition Timing: Testing and Inspection
INSPECT IGNITION TIMINGa. Warm up the engine.
b. When using the intelligent tester:
Check the ignition timing.
1 Connect the intelligent tester to the DLC3.
2 Enter DATA LIST MODE on the intelligent tester.
Ignition timing: 8 to 12° BTDC @ idle
HINT: Please refer to the intelligent tester operator's manual for help on selecting the DATA LIST
c. When not using the intelligent 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 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 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: After engine rpm is kept at 1,000 to 1,300 rpm for 5 seconds, check that it returns to idle speed.
5 Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
6 Check the ignition timing at idle.
Ignition timing: 5 to 15° BTDC @ idle
7 Confirm that ignition timing moves to the advanced angle side when the engine rpm is increased.
8 Remove the timing light.