Hello guys I'm new to this forum but not RC. I am having a problem with my first hpi nitro truck I was told its a savage 25 but from what I can see looks like a savage x???? Below is pictures maybe y'all can identify it for me. I traded for it and was told it ran by hadn't run in a while.....I cleaned it up fresh fuel new flow plug and within 4 or 5 pulls it started. Ran for about 5 seconds and died starts on first or second pull dies within 5 or 6 seconds or as soon as you touch the throttle. I've tried tuning with every piece of tuning info I can find, put it back to factory settings far as I could tell and it does the same thing. Maybe half a dozen times its stayed running for 30 seconds but it always dies pretty quick....... Don't mind the Cen nx-26 engine sitting in it right now. I have included pics of the stock motor as well. I'd like to put it back in and my CEN Nx-26 back in my buggy lol.