I recently acquired a Roketa goKart (KTX-90). It was in pretty bad shape as it sat outside from almost 2 years.

After many hours and a few new electrical parts (CDI, Stator, Coil, spark plug, and battery) I was able to get it started and running.

After a few months of winter, it sat in my garage. I wanted to see if it would still start and now it wont even crank. I tore the starter apart and it was a mess... so I cleaned it as best as I could.

The only think that happens is the solenoid clicks.

What is really odd... When I bridge the starting solenoid, there is no spark.

I have:
verified that the fuse is good
verified that the batter has a full charge
verified that all cables are connected
removed the kill switch cable from the CDI

I am really baffled why the solenoid doesnt spark when I bridge it. A multimeter on the solenoid shows 12.76V, when I click the start it drops down to 7.6V. When I release the starter, it jumps back up to 12.76V.


Please help!

 

First off sounds like you need a new battery as voltage drops too low at 7.6 volts. It may show 12 volts+ but if voltage drops below 9.5-10 volts under a load sounds like you have a weak or sulfated cell. Look over this from Battery Stuff.https://www.batterystuff.com/blog/ho...ry-is-bad.html Plus does it have an ignition switch? If so it has to be in the on position to get spark.If you don't have one,then it's probably just the battery.

 

Welcome to the forums.

You can try the Chinese section if OPT can't (doubtful) help you out.

 

Welcome to the forums.