Component Inspection

INSPECTION

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 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.

3. INSPECT THROTTLE POSITION SENSOR
(a) Apply vacuum to the throttle opener.

Ohmmeter Connection:

Reference:

(b) Using an ohmmeter, measure the resistance between each terminal.

4. IF NECESSARY, ADJUST THROTTLE POSITION SENSOR

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

(b) Insert a 0.60 mm (0.024 in.) feeler gauge between the throttle stop screw and stop lever.

Throttle Position Sensor Adjustment:

Reference:

(d) Gradually turn the sensor clockwise until the ohmmeter deflects, and secure it with the 2 set screws.
(e) Recheck the continuity between terminals IDL and E2.