SUB-EGR Valve Servicing

Figure 15:

Remove the Sub-EGR valve from the carburetor and clean as described below.

1. Remove the snap ring from the Sub-EGR valve pin (Figure 15). Then carefully remove the pin and the link, taking care not to lose the spring and steel ball from the valve.


2. Remove the valve from the carburetor.

NOTE: Place a small Phillips screwdriver in the pin hole for use as a handle. Leave the screwdriver in the Sub-EGR valve to keep the spring and ball in place.

Figure 16:

3. Wet a piece of fine crocus cloth and cup it in the palm of your hand. Clean the valve by twisting it in the crocus cloth (Figure 16).

CAUTION: Do not clean the valve with a wire brush as it may scratch the valve. Scratches will allow carbon to build up on the valve quickly.

Figure 17:

4. Clean the plunger hole in the carburetor with carburetor cleaner (Figure 17). You may want to use a small screwdriver to loosen any carbon deposits from the passages in the under side of the carburetor.

CAUTION: Do not use a screwdriver in the bore of the Sub-EGR valve since this will scratch and cause carbon to build up on the valve quickly.

Figure 18:

5. Dry the valve and plunger hole thoroughly. Reinstall the valve in the carburetor (Figure 18). Install the spring and steel ball if necessary. Connect the linkage and install the pin. Reinstall the snap ring. Carefully reinstall the boot completely.