Evinrude 1977 115hp Power Pack Problems

[wlichti]

Hi

I have a 1977 115hp motor which has been rebuilt and now the power pack keeps blowing no spark on any cyc. (new starter, battery cables, replaced diode bridge) I bought a used one on ebay and put it in two cycls immediately starting working 1 & 3 but 2 & 4 didnt so I swapped the coils and 2 & 4 started working. I then ordered new coils and put them in and now none of the cycls fire again.... Could it be grounds I did check the stator and triggers with a home made DVA adapter to my digital meter and I was in the correct ranges....

Help would be great I have just been told my cancer is back and I probably dont have a lot of time left so I am trying to get things done and sold for my wife....


Wayne

 

[tblshur]

wlichti , so sorry to hear about your cancer, may god bless. cdi electronics has good troubleshooting for your motor . i would try disconnecting the yellow/black wire from the motor it is the shutdown wire , see if spark returns. hope this helps.:joyous:

 

[wlichti]

Hi thanks I have the yellow black disconnected

I put in the used power pack and 1 & 3 lit up but 2 & 4 didnt I assumed it was coils after moving 1 & 3 to 2 & 4's output and they worked. So I purchased new coils and now nothing has spark. I have had trouble with the fuse holder could this be a source of problems.... I followed the CID guide when I took the readings.... I would like to know what would cause the whole pack to go bad its happened twice.

 

[boobie]

Power packs have been known to act that way. JMO.

 

[wlichti]

Ok I understand but all failing twice there must be something I can check and does anybody have a electrical schematic of the power pack

 

[wlichti]

Hi all found the problem the "new" rectifier wasnt so new so when I took it back out behold the pack started working

Thanks for the comments

Wayne Lichti

 

[wlichti]

Also sierra marine has a install / trouble shooting guide for its power pack It was easier than CDI's manual and got me thinking about the rectifier again


Wayne

 

[wlichti]

Sorry it was CDI's installation and trouble shooting guide for the specific power pack

 

[boobie]

The rectifier should have nothing t do with the pack ignition. Two different systems