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Home >> Lincoln >> 1981 >> Town Car 2D Sedan >> Repair and Diagnosis >> Engine Performance >> Ignition System >> MOTORCRAFT EEC III Ignition System >> Testing >> Power Balance Check

Power Balance Check

  1. Connect tachometer to ignition coil. Start engine and let it run at idle until engine reaches normal operating temperature. Remove spark plug wire at distributor.
  2. If RPM drops approximately 100-200 RPM, spark plug tested is OK. Proceed until all plugs have been tested. If all plugs test OK, check fuel system for problems. If engine RPM does not drop when spark plug wire is removed, check spark plug and wire as instructed in next test.
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