I put it down to carburation, so whipped out the Amal (yes, that's back in again) and repl;aced it with the Mikuni. Result? Just the same. still misfiring badly.
So, I thought again, and put it down to ignition! Disconnecting the plug lead and removing the plug, I connected a new plug, laid it against the head, kicked the bike over, and checked for a spark. Great, I thought, a blimmin' big, juicy spark! But I thought, to be on the safe side, I'd check the points, and change the condenser.
By now, of course, the engine was cold. So, when I kicked her over again she ran like clockwork (well, a bit noisy like Big Ben!).
Today I went for a short ride and the same thing happened again. When I got back home, Little Willie just died altogther. Each time I kicked her over a puff of smoke came out of the silencer, but no pop-pop, pop. What is wrong? Or is the silencer getting blocked, I wonder. I bought a new one from C & D Autos a few years back, but, looking at it, the baffles do not seem to come out. Caustic soda might do the trick, though. Any ideas, fellow Bantamites?