Hiya, I have a 74' Peugeot 103 with a very simple electrical system. One coil for spark, one for lights. Two wires, one to the plug and one to the lights. Both coils and points were recently replaced and the bike ran perfectly before I messed with it.
I removed the engine, (never took off the flywheel) cleaned everything up, replaced cables, new reeds, installed the new top end and everything got a nice thin coat of oil. Engine spins smooth as silk. I connected a compression tester and gave the engine a spin with my cordless drill, 130 PSI. Decide to give it another spin and check spark. Nothing. Plug wire connection is good at the coil.
I unscrewed the plug cap from the wire and measured resistance through the cap at 47K ohms. For the hell of it with the cap still removed I checked resistance from the plug wire to the engine block. Also 47K ohms...
I checked the meter (and it's fine) retested and same results.
Should there be resistance through the cap? Is the resistance from the wire through the coil to the block just coincidentally the same? Isn't 47K way too high?
Any advice greatly appreciated. Thanks. (edited)