I have scavenged a second hand turbo and built a jet engine. Very easy to get spooling and runs well but I keep getting flame escaping past the exhaust turbine and then get flame out. It's a waste gated turbo specked to open the waste gate at 8 psi which I can't spool it enough to get to happen. I'm wondering if I'm getting compressor stall or am I over fuelling it causing it to basically flood itself within the flame tube.