Commando just won’t start

Dave Harvey said:

My 850 mk3 broke down, sounded very rough before it stopped I haven’t been unable to get it to restart. The bike is fitted with Boyer ignition, I have good compression on both cylinders, fuel is getting through and there is a good spark to both plugs but it will not start. I have reset the timing several times using the marks on the flywheel but it still refuses to start. Tried to put a little fuel in the carb and a plug holes also a squirt of brake cleaner when cranking and still nothing not even a pop or back fire. I have also set tdc through the plug holes also and turned the piston back 10 mm but nothing just won’t start.

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motoalchemist said:

My 750 did the same thing, but it would run, just terrible, like it was running out of gas. it ended up being a broken wire inside the insulation right where the solder joint is on the pic-up plate coils...literally right at the coil. you could not "see" the break, but the/ wire was moving unnaturally while bike tried to run...replaced it with new pickup plate. eventually I went to Tri-spark. which I now have on all three bikes

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