Electric Choke
NOTE:
This test should be performed when air temperature is
60-80°F (15-27°C).
- Allow choke to cool to permit full closure of choke valve when throttle is opened slightly. Start engine and time the interval required for choke valve to reach full open position. If choke valve does not fully open within 3 1/2 minutes, proceed with test.
- With engine running, check voltage at choke heater connection. If voltage is about 12-15 volts, replace electric choke unit. If low voltage is indicated, check all wires and connections and repair as required. Power for choke unit is through the oil pressure switch. Ensure switch circuitry is good. If not okay, replace oil pressure switch.