Fuel Pacer

Disconnect vacuum hose from switch and install an external vacuum source to switch. Turn ignition to "ON" but do not start engine. Proceed with following tests:

1. Observe left fender indicator light. If light is on, switch is good. If light is off, check wiring and connections to and from switch and to indicator light, check indicator bulb, or check for a defective vacuum switch (Test 2).
2. Apply increasing vacuum to switch. Indicator light should turn off at about 4 1/2 in. Hg. If not, apply more vacuum. If light goes off, switch is out of adjustment. If light does not go out, switch is defective and must be replaced.