help me?

I have a B.M.WK100 trike i love it so much but she is off the road ,it will start up and run for a bit then it dies ,started messing around first when riding it ,it was like someone had just taken the fuel away since then its had new tank new feul pump which runs at 3 bar and all injectors have been sent off and sonic cleaned do you think its the crankshaft sensor again had new one last year ,do hope someone can help want it back on road