Boost leak or Bad Wastegate?

[ArcticChill22]

Ok so I did a boost leak test the other day and watched my gauge...my boost gauge went up to 11 pound then wouldnt go any farther and when I removed the pressure the boost started going down. Is this normal or should it stay at 11 psi? Also it sounded like my boost controller was leaking but I wasnt sure if it was supposed to or not

 

[LiquidX]

Well first off you should be able to pressurize up to and above what you run off of the turbo. The pressure should stay in the system for a bit as well. Redo your test and use soapy water to find your leaks. Delete the MBC during the test as well as it sounds like yours is a bleeder type which is a constant boost leak.

 

[ArcticChill22]

thanks for the quick reply. I have the TurboX's MBC ... And this is a dumb but how do I do add a soapy water mix? I turn on my compressor, hook the hose up to the inlet and pressurize...where would I even add soapy water to make it go thru the intake?

 

[LiquidX]

Fill a spray bottle with dish soap and water. Mix it together and spray all over the intake tract, manifold, gaskets, injector seals, throttle body. Look for bubbles as bubbles indicate a leak of air. Hope that clears it up. Since you said it leaks down quick, try to listen for the air leaks and pinpoint them out. Start the test at the TB elbow and work back so you have "less" leaks to deal with at a time and you can locate them easier.

 

[ArcticChill22]

Ok. Ill try this and see what I come up with