I just bought a used nitro truck yesterday, its a Exceed RC Infinity, i brought it home, and it started right up, then it ran out of fuel, so i put somemore 20% nitro fuel in it, and it wouldnt start, i know that the batterys were good in everything, and i had the on switch turned to on. after i pulled it a few times, the fuel started dripping out of the exaust, is it broken, or am i flooding it?