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Help! No spark

  • firegoalie29
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Help! No spark was created by firegoalie29

I have a 1971 ct1 175 not getting spark
at the plug. 
I have:
check the coil (working getting spark at plug)
filed points (getting spark at points)
cleaned the magneto 
figuring I’m losing the energy between points and coil. 
any suggestions would be appreciated 
Last edit: 18 Jul 2026 09:15 by firegoalie29. Reason: Spelling error
18 Jul 2026 09:13 #1

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  • pabdt
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Replied by pabdt on topic Help! No spark

did you try a new plug? you stated coil is working. make sure wire from coil to plug in good shape.

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1969 Yamaha CT1 175
1974 Yamaha DT125A
1974 Yamaha DT360A with SP96 Exhaust
Next…196x-197x Yamaha something.
18 Jul 2026 12:10 #2

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Replied by RT325 on topic Help! No spark

You say the coil is sparking the plug. How did you get that or did you flash a battery over it if that's the right terminology. You did say getting spark at the points, are you spinning it over with a drill. You could see a minor spark at the points in the dark but not big or I'd be wondering about condenser. Anyway. Shortcut the wiring & run mag black straight up to the plug coil so you're eliminating the loom. See how you go.
18 Jul 2026 14:36 #3

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