Complete training material for Piaggio Vespa ET2/ET4. TESTS. Choke staying on. Carburetor flooding. Faulty vacuum tap. Air filter clogged AUTOMATIC CHOKE OPERATION OPERATION Vespa ET2 50cc engine. Vespa ET4 150cc LEADER engine. FAULTS To check if the choke unit is operating. Diagram 1 – Choke unit operation To check the choke circuit. Diagram 2 – Choke unit power supply. Vespa ET4 Diagram 3 – Choke unit power supply. Vespa ET Diagram 4 – Checking carburetor fuel level 150cc L.E.AD.E.R. Engine IGNITION, CHARGING & IMMOBILIZER Ignition. Immobilizer. Indicators. Choke unit. Carburetor choke. TESTING. Immobilizer. Examples. Stator. The most likely choke fault is the choke remaining ON. Symptoms will be anything that may be caused by a rich mixture. 1. High fuel consumption. 2. Black spark plug. 3. Rough running when hot. OK when ridden hard but rough and four stroking at 20 mph. 4. Fails to start. Plug is found to be black and fouled.
Tags : engine faults, rich mixture, 50cc engine, tap air, engine ignition, fuel consumption, fuel level, vespa et2, stator, training material, complete training, spark plug, air filter, power supply, vacuum
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