Kubota RTV 1100 keeps quiting HELP

I have a 2009 Kubota rtv 1100 diesel. It keeps cutting out when driving. If I am sitting still and rev and rev it, it never misses. But the minute I start driving, it starts cutting out. Can someone please help. I have tried and tried to bleed the injectors but nothing helps. Thank you all in advance. God bless

Kubota RTV 1100 keeps quiting HELP