I am trying to troubleshoot a lack of power with my 1975 70 hp Johnson. Fuel system checks out and I have spark, but weak. Now to test the ignition system...
All I could secure to do the tests was a multimeter with peak hold. I had read about a substitute for measuring DVA with a peak voltage meter was to take a reading of AC volts x 1.41, so that's what I used to get the following numbers: (all of the resistance numbers checked out so they are not included)
Stator output - 110 V
Timer base (to ground) - 165 V
Power pack output to ignition coils - #1 - 66v, #2 - 65v, #3 - 63v
The last numbers were the toughest to test as I had to crank the motor with the coil wire disconnected in order to test the output so the motor was chugging on two cylinders.
Any feedback on my results would be great. I am trying real hard to get to the bottom of this and determine if it is a stator or power pack problem.
All I could secure to do the tests was a multimeter with peak hold. I had read about a substitute for measuring DVA with a peak voltage meter was to take a reading of AC volts x 1.41, so that's what I used to get the following numbers: (all of the resistance numbers checked out so they are not included)
Stator output - 110 V
Timer base (to ground) - 165 V
Power pack output to ignition coils - #1 - 66v, #2 - 65v, #3 - 63v
The last numbers were the toughest to test as I had to crank the motor with the coil wire disconnected in order to test the output so the motor was chugging on two cylinders.
Any feedback on my results would be great. I am trying real hard to get to the bottom of this and determine if it is a stator or power pack problem.