Post by kancur on Nov 14, 2017 8:38:11 GMT -6
Hi everybody, I have a pretty interesting electrical problem with my Keeway ARN 125 scooter.
Problem 1: The scooter works nicely, but when I press the HORN button, engine dies for about 5-10 seconds, then it gets back to life and works OK. (I can't wrap my head around this one)
Problem 2: When I try to crank it using the electrical starter, the engine usually starts just fine, but works for only as long as I hold the starter button! As soon as I let it go, it dies. I can play with throttle and it responds nicely, but when I let off the starter button, it dies. Most of the time I am able to start the scooter this way in about 10 minutes of playing with starter and throttle, and suddenly it begins to work.
Problem 3: Sometimes the engine dies, but without any visible cause. It doesn't matter what speed I go or RPMs of the engine, it just dies for about 5 seconds and then starts working normally, until dying randomly again. This is not happening often. Usually the biggest problem is to get it to start.
More info: I tried checking all my ground connections (but they still might be the cause), moving with all the cables, but have not found any possible cause.
The engine runs no matter if battery is present BUT it has an DC CDI with only one +12VDC connection.
I've had problems with engine randomly dying few months back, but that was because of bad ignition coil, and it was resolved by buying a new one.
Sometimes it gives spark, sometimes not.
But what about it dying when honking or working only while holding starter button? What might be the cause?
I don't think it's because of the load. The light don't make the engine shutdown and definitely use more power. I measured the voltage drop when honking and it was about 0.1V. The horn works normally.
I find it difficult to diagnose because it sometimes works, and sometimes not.
Thanks for any help!
Problem 1: The scooter works nicely, but when I press the HORN button, engine dies for about 5-10 seconds, then it gets back to life and works OK. (I can't wrap my head around this one)
Problem 2: When I try to crank it using the electrical starter, the engine usually starts just fine, but works for only as long as I hold the starter button! As soon as I let it go, it dies. I can play with throttle and it responds nicely, but when I let off the starter button, it dies. Most of the time I am able to start the scooter this way in about 10 minutes of playing with starter and throttle, and suddenly it begins to work.
Problem 3: Sometimes the engine dies, but without any visible cause. It doesn't matter what speed I go or RPMs of the engine, it just dies for about 5 seconds and then starts working normally, until dying randomly again. This is not happening often. Usually the biggest problem is to get it to start.
More info: I tried checking all my ground connections (but they still might be the cause), moving with all the cables, but have not found any possible cause.
The engine runs no matter if battery is present BUT it has an DC CDI with only one +12VDC connection.
I've had problems with engine randomly dying few months back, but that was because of bad ignition coil, and it was resolved by buying a new one.
Sometimes it gives spark, sometimes not.
But what about it dying when honking or working only while holding starter button? What might be the cause?
I don't think it's because of the load. The light don't make the engine shutdown and definitely use more power. I measured the voltage drop when honking and it was about 0.1V. The horn works normally.
I find it difficult to diagnose because it sometimes works, and sometimes not.
Thanks for any help!