240 L4-2.3L SOHC VIN 88 B230F (1986)
NOTE: Switch off AC as applicable.
-
Check idle speed.
-
Adjust engine speed with idle adjustment screw to 700 rpm.
-
Disconnect ground from test point.
Engine speed should increase to 750±20 rpm
If values are incorrect: check/adjust Throttle Body and/or Throttle Cable/Linkage.
Check/Adjust Ignition Setting
Idle speed fluctuations can affect ignition setting. Make sure that fluctuations are not greater than 25 rpm.
If greater, check air control valve hoses for blockages.
-
Check ignition timing with stroboscope.
Ignition setting should be 12° BTDC at idle.
-
Adjust setting by turning distributor body.
Check CO
Fig. 342 CHECK AND ADJUST CO
Test diode should flash if CO is correct.
