i have a 01 TT600, the battery died, I didnt charge for a month. Charge it up, and the electrics work fine but it wont kick over, back firing, new plug filters and check a the normal things and no luck. any suggestions
How is it backfiring if it won't turn over? Does the engine crank but won't fire? It could have some stuck injectors which are flooding the engine, or there may be an issue with ignition? Did you check for fuel and spark?