Corolla/FX L4-1587cc 4A SOHC (1984)
3.
REINSTALL CARBURETOR
(a)
Reinstall the carburetor on the engine.
(b)
Reconnect the vacuum hoses to the proper locations. Refer to the Vacuum Hose Information label under the hood.
4.
REINSTALL AIR CLEANER
5.
WARM ENGINE TO OPERATING TEMPERATURE
Idle CO Concentration Adjustment
6.
ADJUST IDLE CO CONCENTRATION
(a)
Remove the exhaust pressure hose from the bottom of the EGR modulator. Connect the hose to the exhaust analyzer sampling hose to
measure CO levels.
Idle CO Concentration Adjustment
Adjust idle speed and idle mixture
(1)
Initial conditions:
^
Air cleaner installed
^
Normal operating coolant temperature
^
Choke fully open
^
All accessories switched off
^
All vacuum lines connected
^
Ignition timing set to specification
^
Transmission in N range
^
Correct fuel level should be even with the correct level in the carburetor sight glass.
^
Front wheels straight for vehicles equipped with PS
(2)
Start the engine.
(b)
Set idle CO to 0.3% by turning the idle mixture adjusting screw and the idle speed adjusting screw to the specified idle speed as shown below:
Power
4A-C
4A-LC
T/M
Steering
3A-C
'83
'84 '85
'86
'84 '85
'86
M/T
W/O
5 M/T 650 rpm
650 rpm
700 rpm
700 rpm
650 rpm
650 rpm
4 M/T 550 rpm
