Postby Peter Smedley » March 24th, 2014, 4:04 pm
If its a rxcel ignition and the has the proper magnet disc on it the timing should be ok. The carb could need a clean out, new filters and diaphragms. Also check the fine filter in the carb and clean that too. You can get repair kits very easily. Check the needle float valve. Any parts can be got at Toni Clark in Germany. Their service is second to none. If you flick the prop over with the plug out but grounded there should be a good spark. Do you have the right plug?
You might have a cracked insulator block on the carb or leaking gasket.
Hope all that helps somehow.