Federal

Air/Fuel Ratio
Adjustment specification [1] 0.7%
Checking limits 0.3 - 1.2%

FIRING ORDER 1 - 3 - 4 - 2

IDLE SPEED [1]
When Hot 750 - 850 RPM

IGNITION TIMING [1]
2250 ± 50 RPM Coolant temperature sensor disconnected
Checking 4° - 8° BTDC
Adjust to 6° - 1° BTDC

Oxygen Sensor
Torque 41 ft.lbs (55 Nm.)

[1] Ignition timing, idle speed and CO need to be adjusted together to prevent driveablity problems. For complete procedure, see COMPUTERS AND CONTROL SYSTEMS/ADJUSTMENTS. Adjustments