Trhyperactive Posted October 9, 2021 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?
Moderator Cynic Posted October 9, 2021 Moderator 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
Trhyperactive Posted November 6, 2021 Author 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
NE0 Posted November 6, 2021 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?
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