Civic Hatchback L4-1493cc 1.5L SOHC (D15B1) TBI (1990)
Air/Fuel Mixture: Adjustments
NOTE: Air/fuel mixture is ECU controlled, it can only be checked, there are no provisions for adjustment.
1.
Run engine to operating temperature (cooling fan comes on).
2.
Connect a tachometer.
3.
Check and adjust idle speed as necessary (see IDLE SPEED under ADJUSTMENT PROCEDURES).
4.
Connect a CO-meter and check CO content with accessories off. CO content should not exceed 0.1%.
5.
If CO content is out of specification, see DIAGNOSIS AND TESTING PROCEDURES.
Disconnect the tachometer.