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Home >> Land Rover >> 1994 >> Discovery Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Ignition Systems >> Rotor Arm Test
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Rotor Arm Test

Remove distributor cap. Disconnect secondary ignition coil wire from distributor cap and hold it about 0.13" (3 mm) above rotor arm electrode, using suitable insulated pliers. Crank engine. See Fig 1 . There should be no sparking between rotor arm and secondary ignition coil wire. If there is no sparking, go to VISUAL CHECK  . If sparking occurs, install new rotor arm. If engine still does not start, go to VISUAL CHECK  .

Fig 1: Testing Rotor Arm
G00109156Courtesy of LAND ROVER NORTH AMERICA, INC.