Re: New ES250 Trophy Project!
Posted: Wed May 04, 2022 4:40 am
OK, then it's 1 possible cause off the list - it's not the condenser.
Coil dated '77? Or maybe '72, the year of manufacture of the bike?
You keep mentioning 'backfire', which would suggest a fuel mixture igniting in the exhaust. This happens sometimes in 4T's, with a very hot exhaust, but I don't think it's very common for 2T's. I think there it might require a very much offset ignition timing. Is it possible there is something wrong in the cam for the contact breaker / points?
Coil dated '77? Or maybe '72, the year of manufacture of the bike?
You keep mentioning 'backfire', which would suggest a fuel mixture igniting in the exhaust. This happens sometimes in 4T's, with a very hot exhaust, but I don't think it's very common for 2T's. I think there it might require a very much offset ignition timing. Is it possible there is something wrong in the cam for the contact breaker / points?