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Re: No spark changed points still no spark


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Posted by pete 23 on January 25, 2010 at 10:48:42 from (173.87.0.197):

In Reply to: Re: No spark changed points still no spark posted by John T on January 25, 2010 at 06:02:10:

If he follows your procedure I am sure he will be able to determine the problem and correct it. I just wanted to jump in here and say that all my days, people checking point type ignition systems always seem to be looking for spark at the points. To me this is looking for the wrong reaction as one of the purposes of the condensor is to absorb current flow from a rising voltage as the points open so as to not arc across the points. They should be checking for a spark out of the secondary winding of the coil while they are manually opening and closing the points or bypassing them when in an open condition. Any arcing you see at the points is wasted energy and if doing so with an open circuit on the secondary winding of the coil causes a excessive high voltage in secondary and can cause failure of a coil in some cases. The main reason of coil failure in a magneto that does not have a safety gap built in is doing just that. On your high energy ignition systems you very well better have a current path for the very high voltgage if you are checking the spark. Even on lawn mowers, forgeting to ground the plug wire when cranking them over can take a coil real fast. Just thought I would throw these ideas up for what they are worth.


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