Hello, have two problems with my Sym Citycom 300 i: The starter has gone to the knees, when starting, the engine was running short, has no gas, and has gone out. After that nothing went any more. 20 minutes later the starter suddenly went normal, the engine has started, and ran normally. About 20 km driven, the yellow engine control light did not go out long, similar to the yellow ABS warning light. Where should I look? What could it be?