Probably should remove the plugs and wires, do a continuity test on the wires, clean and check the plugs and regap if necessary. Assemble the plugs with wires attached but don't seat the plugs, let them dangle over the side of the frame and make sure the side of the threads touches ground. Crank the bike over and see if their is any spark. If it sparks brightly then the plugs our probably fine. You can also turn off the lights after you have the plugs back in the jugs and wires attached and crank it over till it starts, using a fine mist of water sprayed at the plug wires look for any side sparking going to the frame, if you see that then the wires are bad.
I'm sure their are other things you can do, but this is what comes to mind at the moment
BR
I'm sure their are other things you can do, but this is what comes to mind at the moment
BR
