I just bought a HPI nitro MT, it ran great for a few days. The other day i was playing with it and i flipped it over and the engine died. After that i cant get it started. I looked through the manual and put everything back to the factory setting and tried to start it. Well after three days, two glow plugs and lots of sweet i still cant get it to start regularly. Today i did get it to fire up but only when i was holding it at full throttle. If i let off on the throttle the truck dies. I dont know what to do. I am new at this please help if you can.

sounds like it could be some sort of an air leak... how did it run once you got it started (at full throttle) and how long did it run while at full throttle

when your trying to start it. ad your priming it... can you see the fuel passing through the fuel line and into the carb?

once it start at full throttle it ran okay... i mean it ran like it does at full throttle normally. it ran until i let off at about half of the throttle.
yes i can see the fuel go into the carb. i even took the air filter off and primed it a few time to see if the fuel was making it in.

make sure your exhaust manifold is tight if there is an air leak it won't run properly or even at all. thats what it sounds like to me.