Fuel Cut RPM Test

3A-C, 4A-C & 4A-LC ENGINES

1. Connect tachometer to engine.
2. Start engine and ensure it runs normally.
3. Disconnect vacuum switch electrical connector.
4. Gradually increase engine speed to 2300 RPM and ensure engine fluctuates.
5. Reconnect electrical connector, then gradually increase engine speed to 2300 RPM and ensure engine operation returns to normal.
6. If system does not operate as described, check performance of individual components.