1975 Johnson 85hp. No spark.

acurarsxs009

Recruit
Joined
Mar 16, 2015
Messages
3
Hello everyone, so I’m have an issue with my 1975 Johnson 85hp power shift II. The boat has been sitting for 8 years. I’m currently not getting any spark. I’ve followed the CDI troubleshooting guide.
I’ve got a brand new battery.
Compression test is 120psi-125 on all 4 cylinders.
Removed the yellow/back wire from the power pack (still no spark).
I removed both yellow regulator/rectifier wires from the terminal block (still no spark).
I remover both stator wires from the terminal block and measured resistance between the brown wire and the brown/yellow wire coming off the stator.
(632.8ohms). (Original stator with spec for ohm reading)
Hooked up my DVA to my multi meter and set to dc voltage hooked 1 lead to the brown wire and the other lead to the brown/yellow wires and cranked the engine. Only measuring 60volts.
With that reading I’m saying I need to start with replacing the stator. Just want some input to see if I am performing the test correctly before I spend money on a new stator.

Last time boat was running I had replaced power pack, spark plugs, all 4 coils and wires, regulator/rectifier, and the trigger/timing base all from CDI.

Any input would be greatly appreciated
 

Balderdash

Cadet
Joined
Oct 21, 2023
Messages
7
Hello everyone, so I’m have an issue with my 1975 Johnson 85hp power shift II. The boat has been sitting for 8 years. I’m currently not getting any spark. I’ve followed the CDI troubleshooting guide.
I’ve got a brand new battery.
Compression test is 120psi-125 on all 4 cylinders.
Removed the yellow/back wire from the power pack (still no spark).
I removed both yellow regulator/rectifier wires from the terminal block (still no spark).
I remover both stator wires from the terminal block and measured resistance between the brown wire and the brown/yellow wire coming off the stator.
(632.8ohms). (Original stator with spec for ohm reading)
Hooked up my DVA to my multi meter and set to dc voltage hooked 1 lead to the brown wire and the other lead to the brown/yellow wires and cranked the engine. Only measuring 60volts.
With that reading I’m saying I need to start with replacing the stator. Just want some input to see if I am performing the test correctly before I spend money on a new stator.

Last time boat was running I had replaced power pack, spark plugs, all 4 coils and wires, regulator/rectifier, and the trigger/timing base all from CDI.

Any input would be greatly appreciated
I have been fighting the same issue. New cd pack, new coils, new spark plugs. Both sensors test ok, stator ohms good. Low voltage from stator. The one thing I hadnt done was open the big plug to the remote control. When I did that it fired immediately. I had removed the kill wire. I now need to check ALL the wires from the engine to the controls.
 
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