I’m hoping I can get some advice regarding the ignition timing on this bike.
I recently stripped the engine and, cleaned everything and gave it a lick of paint, reassembled and now have the engine back in the bike and I am now trying to get it back up and running.
A week or two ago I set the valve clearances, static timing etc and the bike started first time and seemed pretty good. I started to balance the carbs and the bike started running rough and died on me. I wasn’t sure why but when I started to check everything from the start again I found the bolt that holds the spark advancer that goes into the end of the cam had come loose and out. I fitted this back nice and snug and did the ignition timing again. I’m now only firing on the left side, I have taken the carbs off three times and am now happy these are ok.
What does happen though is every time I redo the ignition timing and start the bike and still only fire on one side, I check the ignition timing and it’s way out again, I’ve tried this three times now and every time after the bike has run for a few minutes, I check the ignition timing and it’s nowhere near again.
Any ideas of what could be happening or what I might have messed up? I can get it right on the mark but it just won’t stay there?
