SUB-EGR Valve Servicing

Figure 14:

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 14). 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: If the Sub-EGR valve will not come out of the carburetor, place a small phillips screwdriver in the pin hole for use as a handle.

Figure 15:

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 15).

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 16:

4. Clean the plunger hole in the carburetor with carburetor cleaner (Figure 16). 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 17:

5. Dry the valve and plunger hole thoroughly. Reinstall the valve in the carburetor. Install the spring and steel ball. Connect the linkage and install the pin. Reinstall the snap ring.

Figure 18:

6. Turn the Fast Idle Adjustment Screw 3/8 turn clockwise (Figure 18).

NOTE: The Fast Idle Adjustment Screw has a slot for screwdriver engagement. It can be identified by yellow paint applied during manufacture.