bubbly noises pressure testing charge pipes

[mrk1]

Then i have idea about the noise

[xxscaxx]

Do you mean when you turn the car to the ON position and let the fuel pump/system pressurize? Not sure i'm following...but if this is the case, what injectors are they running?

[rb6freak]

Originally Posted by jamesm

so today was boost leak eradication day. had 3 boosted 86's in the green monsta's garage all getting tested. all three made this weird bubbly gurgly noise when the system was pressurized... sounded like fluid bubbling. any idea what this might be? tried popping the oil cap and gas cap to see if pressure was getting in the fuel system or crankcase... nothin'. ideas? anyone else pressure tested their system and heard the same thing?

I did the same test on my PTuning turbo setup last night. I am nearly certain oil was flowing "backwards" through the turbo. Coming from the turbo through the oil scavanging pump and returning to the engine via T fitting (oil feed) at the oil pressure sensor location. I assumed the oil was bubbling in the lines. I am now rethinking.

After driving the car post-pressure-test, I don't have any issues and oil is flowing fine. Haven't checked the PCV though.

[rb6freak]

Originally Posted by mrk1

Where do you have the caps when your pressure testing? I always put mine at the turbo inlet and then at the pipe the hooks up to the TB. So when I pressurize it's only the turbo/pipes/and intercooler. I don't see how any of that would reflect in the motor? Is that how you did yours?

Mine was on the turbo inlet too.