Component Inspection

THROTTLE BODY INSPECTION

Throttle Body
1. CLEAN THROTTLE BODY
(a) Using a soft brush and carburetor cleaner. clean the cast parts.

(b) Using compressed air, clean all the passages and apertures.

NOTICE: To prevent deterioration, do not clean the throttle position sensor, dashpot and throttle opener.

2. INSPECT THROTTLE VALVE

(a) Disconnect the throttle opener vacuum hose from the throttle body.
(b) Apply vacuum to the throttle opener.
(c) Check that there is no clearance between the throttle stop screw and throttle lever when the throttle valve is fully closed.
(d) Reconnect the throttle opener vacuum hose to the throttle body.

Throttle Position Sensor
1. INSPECT THROTTLE POSITION SENSOR
2. IF NECESSARY, ADJUST THROTTLE POSITION SENSOR

(a) Loosen the 2 set screws of the sensor.

(b) Insert a 0.50 mm (0.020 in.) feeler gauge between the throttle stop screw and stop lever.

(d) Gradually turn the sensor clockwise until the ohmmeter deflects. and secure it with the 2 set screws.

Ohmmeter Connection:

Reference:

(e) Recheck the continuity between terminals IDL and E2.