bubbling noise during boost leak test?

[szewczyd]

Exactly what the title states, I hooked up my boost leak tester to my turbo where my intake would attach and I could hear some liquid bubbling. It sounded to thin to be oil so coolant? I have no idea whats up?

 

[xioca]

What area is it coming from? If you can get your hands on a stethoscope you could really narrow it down and go from there.