toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Engine - Hesitation During Engine Warm Up|Page 1304 > < Engine - Hesitation During Engine Warm Up
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Affix the Vehicle, Emission Control Information Label provided with the field fix kit, and discard the Vacuum Hose Information Label.

Carburetor Modification & Procedures

CARBURETOR MODIFICATIONS AND ADJUSTMENTS (ALL MANUAL TRANSMISSION VEHICLES FROM 8/84 TO 12/86 PRODUCTION)

The following procedures may further improve hesitation conditions.

1.

INSPECT FLOAT LEVEL

Fuel level should be adjusted in the upper range of the SIGHT GLASS. If fuel level is below the mid-point of the window, the float level should
be adjusted to specifications.

2.

REMOVE CARBURETOR

(a)

Before disconnecting the vacuum hoses, use tags to identify how the vacuum hoses should be reconnected.

(b)

Remove the carburetor from the engine.

(c)

After removing the carburetor, cover the intake manifold with a clean cloth.

3.

REMOVE MIXTURE ADJUSTING SCREW PLUG (MAS PLUG)

(a)

Plug each carburetor vacuum port to prevent entry of steel particles when drilling.

(b)

Mark the center of the plug with a center punch.

(c)

Drill a 1/4 in. (6.0 mm) hole in the center of the plug.

Engine - Hesitation During Engine Warm Up|Page 1304 > < Engine - Hesitation During Engine Warm Up