The 84 has plug n play connectors. If the connectors haven't been removed??change them to a better connector.
Or hook them straight.
~~1.Check for broken wires and terminals, especially inside the plastic plug-in connectors. We recommend that you remove the pins from the connectors and visually inspect them.
2.Check the flywheel for a broken or loose magnet.
3.Disconnect the kill wires from the CD and connect a DC voltmeter between the kill wires and engine ground, turn the ignition switch on and off several times. If, at any time, you see voltage appearing on the meter, there is a problem in the harness or ignition switch. At NO TIME SHOULD YOU SEE BATTERY VOLTAGE ON A KILL CIRCUIT.
4.Visually inspect stator for burned or discolored areas. If found, replace the stator. If the areas are on the battery charge windings, it indicated a possible problem with the rectifier.
IF NO FIRE ON ANY CYLINDER:
1.Disconnect kill wire AT THE PACK.
2.Check for broken or bare wires on the unit, stator and trigger.
3.Measure DVA voltage of the stator between the output wire sets. With everything connected, readings should be approximately 180 volts or more. Resistance readings between the stator wire sets range from 680 - 800 ohms.
4.Disconnect the rectifier. If the engine fires, replace the rectifier.
NO FIRE OR INTERMITTENT ON ONE CYLINDER:
1.Check stator and trigger resistance, trigger wire sets read approximately 50 ohms between the wire sets (DVA-5V or more), stator reads 680-800 ohms, DVA 180V or more from blue to yellow.
2.If readings are good, disconnect kill wire from one pack. If the dead cylinder starts firing, the problem is likely the blocking diode in the other pack.
NO FIRE ON TWO CYLINDERS:
•If two cylinders from the same CD unit will not fire, the problem is usually in the stator. Test per above.
