Trhyperactive Posted October 9, 2021 Share Posted October 9, 2021 78 dt125 no spark. Switches are good. Positive battery terminal to the frame is a dead short. Lost spark while riding. Is this a compensator amd points issue? Link to comment Share on other sites More sharing options...
Moderator Cynic Posted October 9, 2021 Moderator Share Posted October 9, 2021 Battery has nothing to do with the engine running on a dt, It will literally need one wire from the mag to the coil to run. Bought a field bike for spares in just that configuration. If you have a good plug, coil and lead then continuity down to the mag the only fault there will be the condenser or the points need adjusting or are fouled. I myself used to run the condenser outside of the mag on dt's i have had in the past, may reduce efficiency slightly but save a whole lot of ball ache when they fail, and far easier to change out on a regular basis saving the points burning through a weak condenser. Condensers do fail, likely the weakest 'point' of the system. May just be a bit of fluff in the jaws of the points. 1 Link to comment Share on other sites More sharing options...
Trhyperactive Posted October 27, 2021 Author Share Posted October 27, 2021 Ok i will test it Link to comment Share on other sites More sharing options...
Trhyperactive Posted November 6, 2021 Author Share Posted November 6, 2021 I replaced the condensor but still no spark The black and white or yellow i cant tell that comes out of the case if you test that wire to ground and put it on dc20 or ac20 it has 0 voltage Link to comment Share on other sites More sharing options...
NE0 Posted November 6, 2021 Share Posted November 6, 2021 hi there, the output of the flywheel/magneto is AC...but....if it's not running...then you will only be able to test the output when you kick it over, don't expect a constant reading as the Flywheel will only spin a few revolutions. What model is it DT125 ?E ?F ?1F9. You mention "compensator" . In the UK it's referred to as a condensor, so is this a US or UK or another Icelandic bike? Link to comment Share on other sites More sharing options...
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