IDLE SPEED/IGNITION TIMING/IDLE MIXTURE RATIO INSPECTION
EF & EC-31flowchartThis procedure is for non-catalyzer model only, without CO-meter. Idle speed specs apply: M/T 850±50 rpm; A/T 850±50 rpm in N position. Ignition timing 15°±2° B.T.D.C.
NOTE
For non-catalyzer model [Without "CO"-meter]
Idle Speed/Ignition Timing/Idle Mixture Ratio Inspection — Non-catalyzer model [Without CO-meter]
1
INSPECTION START
2
Confirm that engine is at normal operating temperature.
3
Check and adjust idle speed and ignition timing.
Idle speed: rpm M/T 850±50
A/T 850±50 (in "N" position)
Ignition timing: 15°±2° B.T.D.C.
Refer to page EF & EC-22.
4
Turn off engine and remove air flow meter from vehicle.
5
Drill a hole in seal plug which seals air flow meter variable resister and remove seal plug.
6
Install air flow meter on vehicle. Start engine and warm it up untill water temperature indicator points to the middle of gauge.
7
Race engine two or three times under no-load, then run engine at idle.
8
Adjust mixture ratio with engine speed set at maximum by turning variable resistor.
9
Turn variable resistor of air flow meter 2 full turns counterclockwise.
10
Check idle speed.
Idle speed: rpm M/T 850±50
A/T 850±50 (in "N" position)
O.K.
Stop engine.
Stop engine.
INSPECTION END
N.G.
11
Disconnect A.A.C. valve harness connector.
12
Adjust idle speed to 800 rpm by turning idle speed adjusting screw.
13
Connect A.A.C. valve harness connector.
return to step 7
| Specification | Value |
|---|---|
| Idle speed (M/T)Manual Transmission | 850±50rpm |
| Idle speed (A/T)Automatic Transmission, in "N" position | 850±50rpm |
| Ignition timing | 15°±2°B.T.D.C. |
| Idle speed adjustment target (A.A.C. valve disconnected)Set via idle speed adjusting screw with A.A.C. valve harness connector disconnected | 800rpm |
Idle speed (M/T)Manual Transmission
850±50rpm
Idle speed (A/T)Automatic Transmission, in "N" position
850±50rpm
Ignition timing
15°±2°B.T.D.C.
Idle speed adjustment target (A.A.C. valve disconnected)Set via idle speed adjusting screw with A.A.C. valve harness connector disconnected
800rpm