Checking and Adjusting Idle-rpm, Ignition Timing and Mixture Ratio (Cont'd)
MA-44flowchartChecking and Adjusting Idle-rpm, Ignition Timing and Mixture Ratio
1
START
2
Start engine and warm it up until water temperature indicator reaches normal operating temperature.
3
Open engine hood.
4
Run engine at idle speed for 2 minutes.
5
Disconnect distributor vacuum hose on intake manifold connector side and install blind cap to connector.
6
Race engine (2,000 - 3,000 rpm) 2 or 3 times under no-load, and then run engine at idle speed.
7
Check idle speed. Idle speed: Below 1,000 rpm
N.G.
Adjust idle speed by turning throttle adjusting screw.
Adjust idle speed by turning throttle adjusting screw.
Race engine (2,000 - 3,000 rpm) 2 or 3 times under no-load, and then run engine at idle speed.
Check idle speed. Idle speed: Below 1,000 rpm
O.K.
8
Check ignition timing at idle speed. Ignition timing: B.T.D.C. degree 2 ± 2
N.G.
Adjust ignition timing by turning distributor.
Adjust ignition timing by turning distributor.
Race engine (2,000 - 3,000 rpm) 2 or 3 times under no-load, and then run engine at idle speed.
Check idle speed. Idle speed: Below 1,000 rpm
O.K.
9
Connect distributor vacuum hose to intake manifold connector.
10
A (continues to MA-45)