85 spree w/ no spark
Posted: Thu Jul 15, 2010 7:27 pm
Ok so I have been chasing electrical gremlins around for the last two weeks trying to figure out why my 85 spree doesn't have spark. I started with the manual's checklist:
Faulty Spark Plug:
- Tried three different NGK plugs
Poorly connected or broken wire between...
- alternator and CDI (black and red wire) = continuous
- CDI and Ignition coil (black and yellow wire) = continuous
- CDI and Ignition switch (black and white wire) = continuous
- Ignition coil and Spark plug = continuous
Faulty Ignition Switch
-good, continuous between black and red wires when key is in the ON position
Faulty Engine stop Switch
- good, no continuity between black/white and green wire when in the RUN position
Faulty Ignition coil
- Replaced old one with ebay working one. All resistance values check out to be good
Faulty CDI
-Tried two different working ones, all terminals at proper specs
Faulty Alternator
- This is one I havent dealt too much with only because when i kickstart the engine, the headlight lights up. So I'm assuming something is working there. But maybe this could be a weak spot? I double checked almost all the wires i could think of.
This spree has not been run for about 6 months. When it was last running it, I noticed it was cutting out all of a sudden when I was riding it. I would be riding and then you would feel the engine decelerate rapidly like it miss fired. At the time I didnt think it was a spark issue because it started great, only when i was riding it did it cut out. After the winter, I rebuilt the carb and intake with new gaskets and a cleaned muffler. I checked compression before starting and it was perfect at 120 psi. I sucked a lttle on the vaccuum petcock with the carb drain screw out and fuel was coming out. The last thing to check was spark, and that was a big no go. Thus I am stuck in awesome weather without the ability to ride my beloved spree. Somebody please help!!!
Faulty Spark Plug:
- Tried three different NGK plugs
Poorly connected or broken wire between...
- alternator and CDI (black and red wire) = continuous
- CDI and Ignition coil (black and yellow wire) = continuous
- CDI and Ignition switch (black and white wire) = continuous
- Ignition coil and Spark plug = continuous
Faulty Ignition Switch
-good, continuous between black and red wires when key is in the ON position
Faulty Engine stop Switch
- good, no continuity between black/white and green wire when in the RUN position
Faulty Ignition coil
- Replaced old one with ebay working one. All resistance values check out to be good
Faulty CDI
-Tried two different working ones, all terminals at proper specs
Faulty Alternator
- This is one I havent dealt too much with only because when i kickstart the engine, the headlight lights up. So I'm assuming something is working there. But maybe this could be a weak spot? I double checked almost all the wires i could think of.
This spree has not been run for about 6 months. When it was last running it, I noticed it was cutting out all of a sudden when I was riding it. I would be riding and then you would feel the engine decelerate rapidly like it miss fired. At the time I didnt think it was a spark issue because it started great, only when i was riding it did it cut out. After the winter, I rebuilt the carb and intake with new gaskets and a cleaned muffler. I checked compression before starting and it was perfect at 120 psi. I sucked a lttle on the vaccuum petcock with the carb drain screw out and fuel was coming out. The last thing to check was spark, and that was a big no go. Thus I am stuck in awesome weather without the ability to ride my beloved spree. Somebody please help!!!