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  • 1 Post By backofbeyond
  • 1 Post By Ruviol

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  #1  
Old 29 Dec 2020
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Open exciter coil ? Help

Hello everyone.
I bought a 110cc xmoto pit bike four months ago. Now it won’t start.
I removed the spark plug, made the body of the spark plug contact the chassis and started it, but no spark was present. I tested the coil with a multimeter and seems ok. I was looking to replace the cdi and coil together. But I decided to check out the exciter stator and this seems to be open.
it turns out that the dc resistance measurement between ground and the black/red wire is OL or infinite.
but dc resistance between ground and the trigger pin is fine 130 ohms. I attached an image that shows the two points that show an open coil!
I am new to troubleshooting bike’s electrical systems.
It is clear that one side of this coil is attached to the green ground wire. The other side is the black/red exciter
Does anyone have this type of stator?
can someone help?
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  #2  
Old 29 Dec 2020
*Touring Ted*'s Avatar
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How many and what colour wires are on the lead that comes from the stator ?
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  #3  
Old 29 Dec 2020
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Quote:
Originally Posted by *Touring Ted* View Post
How many and what colour wires are on the lead that comes from the stator ?
Five wires,
Two yellow
One green , this one has continuity to chassis and to one side of the wrapped coil.
One gren/white, this one has continuity to the pick up coil , reads 130 ohms
And one black and red, this one goes directly to one side of the wrapped coil ( shows open)
Thank you

Last edited by Ruviol; 29 Dec 2020 at 12:14. Reason: None
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  #4  
Old 30 Dec 2020
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After an Xray inspection of the coil was performed:
Attached Thumbnails
Open exciter coil ? Help-stator_opendensity.jpg  

Open exciter coil ? Help-stator_open6.jpg  

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  #5  
Old 1 Jan 2021
*Touring Ted*'s Avatar
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You X-rayed a coil ?

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  #6  
Old 2 Jan 2021
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Quote:
Originally Posted by *Touring Ted* View Post
You X-rayed a coil ?

My shed is starting to look very underpowered right now.

Bit of an upgrade from the fag papers and lump hammer that I used to fix faults with.
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  #7  
Old 4 Jan 2021
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Quote:
Originally Posted by backofbeyond View Post
My shed is starting to look very underpowered right now.

Bit of an upgrade from the fag papers and lump hammer that I used to fix faults with.
we have an XRay Machine at work.
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