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Blown Coil
by: JoeyBee - Feb 8, 2016 3:21:38 GMT -5
via mobile
Post by JoeyBee on Feb 8, 2016 3:21:38 GMT -5
So it has been a while since I posted. I have been lurking and reading, just found myself busy with home and garage projects. My big adventure right now is restoring a 1986 Honda Shadow.  Anyways, what made me take the time to post was a recent issue I had with my scooter. I found myself in the dreaded "no spark zone". I was going through and checking the electrical, and everything seemed fine. I just couldn't figure out the problem. I tried my spare electrical parts, and still no spark. Instead of giving up, I decided to go back to the basics. I went through the troubleshooting guides here, and on YouTube. After a couple days I found a stator guide from 90GTVert with revealed my problem. My exciter coil in my stator starting disintegrating. I don't know how or why, but a new one has already been ordered from NYCscooterparts tvnacman. I posted the video below in case someone else runs into a similar problem. I really liked the video because it was short, but very detailed and easy to follow along with.  |
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Blown Coil
by: rockynv - Feb 8, 2016 4:52:03 GMT -5
Post by rockynv on Feb 8, 2016 4:52:03 GMT -5
Yes a very common issue which usually presents itself with symptoms of a lean condition while riding until they fail completely. It usually starts as a small crack in the plastic and then progresses to a total failure with or without a meltdown.
Yours looks like it sustained some physical damage from debris being thrown about inside the flywheel. Any missing nuts/screws or excessive play in the crank shaft?
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Blown Coil
by: tvnacman - Feb 8, 2016 5:26:45 GMT -5
Post by tvnacman on Feb 8, 2016 5:26:45 GMT -5
I saw your email and order this morning its packed ready for shipment. It will go out today.
John
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Blown Coil
by: JoeyBee - Feb 8, 2016 12:57:39 GMT -5
via mobile
Post by JoeyBee on Feb 8, 2016 12:57:39 GMT -5
Yes a very common issue which usually presents itself with symptoms of a lean condition while riding until they fail completely. It usually starts as a small crack in the plastic and then progresses to a total failure with or without a meltdown. Yours looks like it sustained some physical damage from debris being thrown about inside the flywheel. Any missing nuts/screws or excessive play in the crank shaft? That's the weird part. It can't be a result from running lean. With the warmer weather settling in, I have been running rich for the past few weeks since I upped my main jet and adjusted my needle. And no bolts were missing, and no debris was found in the inside. The crank shaft has no play, solid as a rock, and the housing nut was torqued down. |
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Blown Coil
by: rockynv - Feb 8, 2016 13:41:40 GMT -5
Post by rockynv on Feb 8, 2016 13:41:40 GMT -5
Yes a very common issue which usually presents itself with symptoms of a lean condition while riding until they fail completely. It usually starts as a small crack in the plastic and then progresses to a total failure with or without a meltdown. Yours looks like it sustained some physical damage from debris being thrown about inside the flywheel. Any missing nuts/screws or excessive play in the crank shaft? That's the weird part. It can't be a result from running lean. With the warmer weather settling in, I have been running rich for the past few weeks since I upped my main jet and adjusted my needle. And no bolts were missing, and no debris was found in the inside. The crank shaft has no play, solid as a rock, and the housing nut was torqued down. I said it can appear to have the symptoms of running lean when the trigger coil starts to fail as you slowely loose power as the engine warms up. Some think its vapor lock, hung float not dropping or the fuel pump not keeping up when it first starts to act up. |
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Blown Coil
by: JoeyBee - Feb 8, 2016 21:05:18 GMT -5
via mobile
Post by JoeyBee on Feb 8, 2016 21:05:18 GMT -5
Okay, I understand.
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Blown Coil
by: rockynv - Feb 9, 2016 1:10:05 GMT -5
Post by rockynv on Feb 9, 2016 1:10:05 GMT -5
It can be very frustrating when it first starts and you think you have a carb or fuel pump issue. Engine gets warm, starts loosing power like its running lean and then stalls. A few minutes later it runs like nothing happened. Cool weather comes and then you think all is well but then on the next warm day it starts acting up again continuing on until it gets bad enough to become obvious. Sometimes it cools fast enough in the beginning that by the time you get the seat bucket off its working and reading fine again and then won't heat up enough to fault as long as the seat bucket is removed from the bike. Glad you got to the root of it. |
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Blown Coil
by: tvnacman - Feb 10, 2016 20:38:28 GMT -5
Post by tvnacman on Feb 10, 2016 20:38:28 GMT -5
do I ship faster or do you install faster?
John
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Blown Coil
by: JoeyBee - Feb 11, 2016 18:14:01 GMT -5
via mobile
Post by JoeyBee on Feb 11, 2016 18:14:01 GMT -5
Shipping was very quick. Thank you very much for getting that first one out very quickly
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Blown Coil
by: JoeyBee - Feb 11, 2016 18:25:53 GMT -5
via mobile
Post by JoeyBee on Feb 11, 2016 18:25:53 GMT -5
So after installing my replacement stator and immediately destoying it, I was able to figure out the problem. The threads from the flywheel that hold the plastic fan went to garbage. I guess I have been over tightening them. That caused them bulge out on the back side of my flywheel and destroy the exciter coil. Expensive lesson learned. Don't over tighten the fan bolts. And many thanks to tvnacman for getting another stator and new flywheel out so quickly.  |
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