Ford Carburetor Adjustments (Escort 3)

Adjusting idle speed and CO content in exhaust gases

Warm up the engine to operating temperature, connect the gas analyzer and tachometer. Set the crankshaft speed to 3000 rpm, hold it for about 30 sec and reduce the speed to idle speed. After the instrument needles settle down, read the CO content and crankshaft speed. If necessary, adjust the speed with quantity screw 1 (Fig. 2.80).



In case of increased CO content, remove safety cap 2 of the quality screw using a screwdriver with a narrow blade. Raise the speed to 3000 rpm, reduce it to idle and adjust the CO content in the exhaust gases by turning the quality screw for 30 s. If the adjustment takes more than 30 s, repeat the operation. Install a new safety cap on the quality screw.

Adjusting the idle speed and CO content in exhaust gases of engines with automatic transmission

Loosen the forced downshift adjustment screw (see the figure in the "Hydromechanical gearbox" section) so that a gap of 2-3 mm is obtained. Set the selector lever to position "P" and warm up the engine to operating temperature and apply the handbrake. Adjust the idle speed (850 rpm) and CO content (1.5%) with the electric fan running. Use the forced downshift adjustment screw to set a gap of 0.1 mm, paying attention to the free rotation of the control valve drive axis. Check the idle speed and CO content again.

Adjusting the automatic starting device

Disconnect the negative cable from the battery and remove the air filter. Loosen the three Phillips-head screws securing the bimetallic spring housing to the automatic starting device housing and remove it. Remove the plug of the adjustment hole in the upper part of the starting device housing. Turn the bimetallic spring lever of the starting device so that the central hole of the axis aligns with the hole in the plug (Fig. 2.81).



Check through the hole in the protective plug. Insert a 3.0 mm drill shank for the GLA engine or 3.4 mm for engines of other models into the hole in the axle. Loosen the central nut of the starting device and turn lever 1 clockwise until it stops, tighten the nut and remove the drill.

Adjusting the air damper opening

Using tweezers, bend the tongue of the air damper opening lever downwards (Fig. 2.81) and turn it so that the central hole in the axle aligns with the hole in the plug, insert the shank of a 3.3 mm drill for GLA and LUA engines and a 4.4 mm drill for other engine models into the hole as far as it will go. Press the bimetallic spring lever all the way clockwise or counterclockwise depending on the engine model to access the pneumatic drive plunger and push it in. In this position, there should be a gap between the opening lever and the bimetallic spring lever. Holding lever 1 (Fig. 2.81) of the bimetallic spring pressed all the way clockwise, bend the tongue of opening lever 3 until it touches lever 1. Remove the drill and install the plug. Install the gasket and the bimetallic spring housing, paying attention to the position of the bimetallic spring, insert the lower fastening screw first. Turn the housing and set it to the desired mark (Fig. 2.82). Tighten the bimetallic spring housing fastening screws.

Removing and installing a manual starting device

If the starting device is removed, its lever must also be removed, since these parts are adjusted to each other during adjustment or replacement. Disconnect the negative cable from the battery and remove the air filter. Disconnect the cable from the manual starting device drive lever. Unscrew the three Phillips-head screws and remove the lever and drive cable bracket (Fig. 2.83).



Loosen the three screws and remove the trigger. Install a new gasket and secure the trigger to the carburetor body. Set the trigger drive to the middle position and secure the lever body. Connect the cable and adjust it as described below, tighten the clamp screw.

Adjusting the air damper drive cable

From a steel strip or a piece of pipe with a diameter of at least 12 mm, make a spacer 37.0-37.5 mm long (Fig. 2.84).





Pull out the air damper control handle and install the spacer between the handle and the instrument panel, press the handle to fix the spacer. Using a pencil or adhesive tape, mark 22 mm from the end of the cable (on some cars the cable is bent or has a slight thickening at this point) (Fig. 2.85).



Insert the cable into the clamp of the starting device and tighten it with the screw against the mark. Pull the cable sheath so that the starting device drive lever touches the stop 4 (Fig. 2.86).



Tighten the screw of the casing clamp 2. Remove the spacer and check the position of the starting device drive lever with the handle fully extended and fully recessed. In case of difficulty starting the engine (cold or hot), check the position of the drive lever, which should enter the lever of the starting device cover, and also check the position of the spring tab.

Adjusting the throttle cable

Disconnect the negative cable from the battery and remove the air filter. Press the accelerator pedal all the way down and lock it in this position with a wooden block. Loosen the cable sheath clamp so that the throttle actuator is in the fully open position. Release the accelerator pedal. Press it all the way down again and make sure that the throttle valve is fully open. Repeat the adjustment if necessary. Install the air filter and connect the battery.

The original text is provided on an online resource (FORDBOOK)