Poor Acceleration

FUEL

TROUBLESHOOTING

CAUSE

REMEDY

5. Excessive fuel pump pressure

5. Refer to FUEL PUMP - Troubleshooting Guide.

1. Vacuum cylinder not operating correctly

1. If loose, replace gasket and tighten. Manually check;

replace if operation is not smooth. Replace all body

gaskets and the carburetor mounting gasket.

2. Power jet and valve dirty or not operating

2. Vacuum cylinder not operating, refer to No. 1. Clean

power jet and valve. Manually check the valve operation, if

not smooth, replace.

3. Incorrect float level

3. Check and adjust float level as necessary.

Replace float if leaking.

4. Worn needle valve and seat

4. Clean and check needle valve and seat.

If worn, replace. If not, check fuel pump pressure.

5. Choke valve partially closed

5. Open choke valve. Adjust choke cable so that the valve

will open and close completely.

6. Manifold heat control valve stuck

6. Free-up. Replace bi-metal spring, if necessary.

Poor Performance

(Air-Fuel Mixture Too Rich)

1. Restricted air cleaner

1. Service air cleaner more often.

2. Float level too high

2. Check and replace float, if leaking. Adjust float level.

3. Excessive fuel pump pressure

3. Refer to FUEL PUMP - Troubleshooting Guide.

4. Vacuum cylinder or power jet and valve

4. Free-up or replace stuck assembly. Clean

stuck

out all passages.

B-52