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1974 yamaha dt360 No spark

This is a discussion on 1974 yamaha dt360 No spark within the Vintage forums, part of the Types of Bikes category; Hey...recently aquired this 74 Yamaha 360 which had no spark...found a cdi for it and then it had a spark...very ...


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Old 07-25-2010   #1
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Default 1974 yamaha dt360 No spark

Hey...recently aquired this 74 Yamaha 360 which had no spark...found a cdi for it and then it had a spark...very weak but it was there...but the spark also comes and goes with no ryhme or reason, its very intermitent. It also only has spark when the battery is out.
Anybody know what might be goin on??? Does it have points or anything that might be dirty or out of adjustment????
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Old 07-26-2010   #2
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Is there any type of spark plug will produce a better spark than others?

And If I get a decent spark, I was thinking about throwing a new piston and rings in it. is this a big deal?? just remove the head and cylinder? Can one compress the rings with fingers alone as you slide the cylinder back on?? Does yamaha still supply these parts?
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Old 07-31-2010   #3
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Does the battery need to be in to make the ignition system operate properly??? And is there a way of testing the CDI?
This is driving me nuts lol

Last edited by Kevin 007; 07-31-2010 at 09:59 PM.
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