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How to 'Kill' a Lucas KVF Magneto?
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<blockquote data-quote="greg brillus" data-source="post: 90666" data-attributes="member: 597"><p>Are you sure the carbon contact on the end cap is held up against the center screw.........The other thing to try is run it with the end cap off, and using a piece of insulated wire earthed to the engine, and touch the other end of the wire against the spinning center screw and see if it kills both cylinders. If it still fires on one, then the issue is further within the mag, possibly a dirty slip ring.........Some of the pickups have very poor carbon brushes which leaves a trail of particles around the slip ring, this can cause issues of misfiring or jumping to the safety gap screws. The better brushes have a small groove along their length, these seem to give little trouble. Another point is the after market points assemblies (as opposed to the genuine brass bodied ones) give trouble, the ones with the double sided earth contact, I have seen many where the earth contact comes loose, like a loose rivet.......and this causes all sorts of poor running issues. Cheers and good luck.....................Greg.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 90666, member: 597"] Are you sure the carbon contact on the end cap is held up against the center screw.........The other thing to try is run it with the end cap off, and using a piece of insulated wire earthed to the engine, and touch the other end of the wire against the spinning center screw and see if it kills both cylinders. If it still fires on one, then the issue is further within the mag, possibly a dirty slip ring.........Some of the pickups have very poor carbon brushes which leaves a trail of particles around the slip ring, this can cause issues of misfiring or jumping to the safety gap screws. The better brushes have a small groove along their length, these seem to give little trouble. Another point is the after market points assemblies (as opposed to the genuine brass bodied ones) give trouble, the ones with the double sided earth contact, I have seen many where the earth contact comes loose, like a loose rivet.......and this causes all sorts of poor running issues. Cheers and good luck.....................Greg. [/QUOTE]
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How to 'Kill' a Lucas KVF Magneto?
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