OMC v6 Stator question

[dsinger]

1990 225 Stator. Does this stator isolate the spark to the three cylinders on the left and right of the motor. Could the stator cause all three cylinders on the left of the motor to go out and maintain spark on the right side. Also with this stator could the rectifier cause the stator to go bad without showing signs of overheating. As well what is the bench test for the rectifier. thanks

 

[HighTrim]

Re: OMC v6 Stator question

The stator could isolate spark to one bank of your V6, yes.

No fire or Intermittent on One Bank:

1. Check the stator resistance. You should read approximately 1000 ohms from the brown wire to the brown/yellow wires and 100 ohms from the orange to orange/black.
2. Check the DVA output from the stator. You should have a reading of at least 150V or more from the brown wire to the brown/yellow wire (while connected to the pack) on each bank.
3. Check the DVA output on the orange wires from the power pack while connected to the ignition coils. You should have a reading of at least 150V or more. If the reading is low on one bank, disconnect the orange wires from the ignition coil for that bank and reconnect them to a load resistor. Retest. If the reading is now good, one or both of the ignition coils are likely bad. A continued low reading indicates a bad power pack.

To test the rectifier.....and I hope I have the colours correct for your year

Place meter in Hi ohms position

1. Disconnect rectifier lead from terminal block. Connect one ohmmeter lead to either yellow or yellow grey rectifier lead, and other meter lead to ground. Note reading

2. Reverse leads, and note reading. Infinite or very high reading in both checks indicates diode open. zero reading in both checks indicates diode is shorted. Normal diode will show a reading in one direction and no reading in other.

3. Repeat with other rectifier yellow lead.

4. Repeat test, connect meter between rectifier yellow lead and rect red/purple lead. Between yellow/gray stripe rectifier lead and rect red/purple lead.

 

[angus63]

Re: OMC v6 Stator question

I believe it would be more likely the shift switch or the power pack that would knock out even or odd numbered cyls. Even though you have one power pack, I'm pretty sure it's split into two banks internally. Since the stator has individual coils, not sure how it would knockout one side????
Hope I'm correct (my 1995 175 opro is this way).
Good luck

 

[ezeke]

Re: OMC v6 Stator question

I agree with Angus63 that the Shift Interrupt or shift assist switch is a likely problem. If it is loose, misplaced or faulty, you lose 3 cylinders at the wrong time, period.

 

[dsinger]

Re: OMC v6 Stator question

I guess the best way to test the shift interrupt is to just dissconnect the ground on it. Is there a dioed in that circuit and can anyone tell me its purpose.

 

[ezeke]

Re: OMC v6 Stator question

You can simply disconnect the ground to test. It may make shifting particularly hard, so be careful. The switch is to ground half the powerpack, slowing the engine by disabling three of your six cylinders when the switch is closed.

There is a diode in the ciircuit between the left and right banks to keep the interrupt from killing all six cylinders. The circuit is the shared kill wire circuit, the wiring black and yellow.

 

[dsinger]

Re: OMC v6 Stator question

Ok I found the shift interrupt is already gone. I disconnected the black and yellow wires still no spark. I pulled the red plug and jumped the solenoid still no spark. OMH between the brown and brown gray wire is 1000, OHM between the yellow and yellow gray is 100. Does this mean my stator is bad. Does the stator divide its output into banks like the power pack. Can put the brown and brown gray where the yellow and yellow gray are and see if spark returns to the other side. That would make me feel more confident it is the stator and not the pack.. Thanks.

 

[dsinger]

Re: OMC v6 Stator question

Never mind I answered my own question about swaping the wires. But does anybody have a used stator they want to sell or trade for a new power pack.