Chuck Butner
Recruit
- Joined
- May 12, 2023
- Messages
- 1
I just replaced the stator b/c of a no spark condition. Installed used stator from Ebay. It had 1 bad CDI winding (open). i saw that you only need one ignition winding if you only have 1 CDI so, I did not connect it. (good winding was 750 ohms). I concluded that thought b/c I saw a diagram for a motor with 2 CDI's and 1 for 3 & 4 cyl engines and instead of paralleling the 2 stator winding they split them to separate CDI inputs therefore I assumed 1 winding would be enough to make it run. After connecting it up I cranked the Motor and it seems to run fine but, when I checked the charging voltage it was ZERO. Thats when I saw the purple wire going to the ignition sw. was connected on the rectifier to the AC side. (BTW, another dude worked on this before it to got me...maybe he did that IDK??)
However, I did see 17 vac coming off the stator going to the AC side of the rectifier when I rev'd her up. I then moved the purple wire over to the + rectifier output (per diagram) and rechecked the charging output at the battery and starter relay. I saw crazy FM stuff.....Fluxuating DC & AC volts ranging from 13vdc to 150 volts both AC/DC......Then I checked the voltage on the kill circuit and saw 220+ vac & vdc....I started to freak (b/c that s/b Zero). I thought I was about to blow the battery out of the boat.
In process I learned that these old motors do not have voltage regulators. Therefore my guess was that all the wires being crammed together behind the CDI plus the Spark plug wires running right beside them could be causing some ghost voltage from the stator windings or spark plug wires to be induced onto the charging circuit. ( I hope that's all it is?) I checked all this with 3 different decent meters...2 out of 3 showed crazy volts but, my old household Clamp On Sperry meter (not too accurate for electronics) seemed to sink the supposed ghost voltage and gave a decent charging reading at the battery of 12.7 vdc and 0vac at just above idle.
HERE'S MY QUESTION; Should the charging voltage be that dirty and will it harm the battery? OR......did I connect something wrong? (stator wires were brown/yel to CDI yellow and, brown/blue to CDI blue.....and 2 big stator yellows to A/C side of rectifier and the stator winding colored brown/yellow & brown/black/blue were ''open'' so I didn't use/connect them to anything(I taped them off).
What would ya'll do if you saw this? It's my neighbors boat and he already thinks I'm not too bright...lol
However, I did see 17 vac coming off the stator going to the AC side of the rectifier when I rev'd her up. I then moved the purple wire over to the + rectifier output (per diagram) and rechecked the charging output at the battery and starter relay. I saw crazy FM stuff.....Fluxuating DC & AC volts ranging from 13vdc to 150 volts both AC/DC......Then I checked the voltage on the kill circuit and saw 220+ vac & vdc....I started to freak (b/c that s/b Zero). I thought I was about to blow the battery out of the boat.
In process I learned that these old motors do not have voltage regulators. Therefore my guess was that all the wires being crammed together behind the CDI plus the Spark plug wires running right beside them could be causing some ghost voltage from the stator windings or spark plug wires to be induced onto the charging circuit. ( I hope that's all it is?) I checked all this with 3 different decent meters...2 out of 3 showed crazy volts but, my old household Clamp On Sperry meter (not too accurate for electronics) seemed to sink the supposed ghost voltage and gave a decent charging reading at the battery of 12.7 vdc and 0vac at just above idle.
HERE'S MY QUESTION; Should the charging voltage be that dirty and will it harm the battery? OR......did I connect something wrong? (stator wires were brown/yel to CDI yellow and, brown/blue to CDI blue.....and 2 big stator yellows to A/C side of rectifier and the stator winding colored brown/yellow & brown/black/blue were ''open'' so I didn't use/connect them to anything(I taped them off).
What would ya'll do if you saw this? It's my neighbors boat and he already thinks I'm not too bright...lol