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Blowing spark plugs

I have a yamaha 1979 enduro dt 50. It blows its spark plugs.What could be the problem?

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  • tombones May 11, 2010

    1979 Yamaha 50cc or 80cc or 250cc? What do you mean by a blown spark plug > black fouling of the plug, cracked porcelain core, electrode burned away, stem burned away?

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I imagine you mean that the spark plug does not last very long before failing to work at all. I had this problem on a Honda CG125 years ago. Replace the condensor and that should see you right.

Posted on Apr 23, 2009

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