Ok what does it sound like before it quits is it a blubbie type or does it rev up then quite.

Also what nitro percentage are you running and what percent did you run before. What plugs are you running are they hot, medium or cold plugs. Also try keeping the glow igniter on while it's running or are you alredy doing that. Also is the idle and the linkages right. Take off the air filter and check the opening in the carb how big is it. It should be about 1mm-2mm----------2mm being the most. And is the glow igniter even working take the glow plug out and attach it to the igniter and see if the element gets red hot. If not try another battery or try charging it.


The way it sounds as if it is just insanely rich and it just wont stay running.
But get back and if this doesnt help you any i will take another shot at it.