Hey guys I think I found my problem. I took out the engine and cleaned it and saw no cracks even with a magnifying glass and then I took the pipe off. The little rubber piece in between the manifold and the engine had a slit 3 quarters of the way around it which I think made the pipe not sit right on the engine letting the oil/nitro leak out. The bubbling I think was caused by vibration or heat. I am going to run it again soon and I will lyk.