Did boost leak test

[mitsuclipsegsx]

I did it yesterday but i didn't hear air leaking, what i heard was like bubbling and i drove it for 20 min then did it....

 

[CorrupTTalon]

need a little more info there...

where did you hear the bubling? in the coolant system? take off the coolant cap and do the test again. if you have air coming out of the coolant then your HG is bad

 

[mitsuclipsegsx]

need a little more info there...

where did you hear the bubling? in the coolant system? take off the coolant cap and do the test again. if you have air coming out of the coolant then your HG is bad

hard to tell exaclty but i would say around tb area

 

[CorrupTTalon]

just try it for shits and giggles.. make sure to open the TB butterfly to get a faster reading

 

[Burnett03]

just try it for shits and giggles.. make sure to open the TB butterfly to get a faster reading

get a mixture of soap/water and spray in areas you think are leaking.. if you see bubbles its leaking air

 

[VBGSX]

First of all you won't hear all leaks.
The best thing to do is get a spray bottle and fill it with dish soap and water.
Then spray it over every place air travels through. Back of the compressor housing, all IC couplers, BOV, TB(biss screw, etc), All vacuum hoses, Intake mani where it meets the head, base of the injectors at the head, etc, etc.
Once you pressurize the system you will see the leaks. They usually blow bubbles. You can usually hear them blowing the bubbles also.

The bubbling sound you hear. Kneel down and listen under the car. See if it sounds like it's bubbling in the oil pan. If thats where you hear it, then it's the compressed air getting pass the turbo seals, then going down the drain tube and bubbling under the oil.

This is a good start for now.
Good luck

 

[mitsuclipsegsx]

them blowing the bubbles also.

The bubbling sound you hear. Kneel down and listen under the car. See if it sounds like it's bubbling in the oil pan. If thats where you hear it, then it's the compressed air getting pass the turbo seals, then going down the drain tube and bubbling under the oil.

This is a good start for now.
Good luck

Is that normal?

 

[VBGSX]

I've heard stories both ways.
That happened to me with my 50 trim a year ago.
When I asked about it, I found out it's quite common.
Think about it this way. When the engine is off there isn't any oil pressure. With no oil pressure, the air sneeks by the slight tollerances.
Once the engine is on and the oil pressure is up, no more air can push it's way by.
That's the easiest way to explain it.

I'm still running my 50 trim and I have no problems at all with it. No shaft play and no oil seeping by.

If that's where it's coming from, check for shaft play and oil. If none, I think you'll be fine. Just check it every now and then.

Oh and if you want to make sure that's were it's coming from, bypass the turbo and pressurize the system after the turbo. That will tell you for sure.

Hope this helps

 

[CorrupTTalon]

doesnt make sense... if there is air leaking past the turbo seals than there has to be oil leaking past the turbo seals... and there is air in the crank regardless of leaking air into the turbo...

 

[VBGSX]

doesnt make sense... if there is air leaking past the turbo seals than there has to be oil leaking past the turbo seals... and there is air in the crank regardless of leaking air into the turbo...

Nope. Not a drop! Like I said. I had mine do it a year ago. I've pulled my IC pipes off so many times I don't even want to count. No oily residue, nothing! The car runs great and not a hint of smoke.

What do you mean there is air in the crank?
If you're talking about in the crankcase, then yes. Of course there's air in there. It's definitely not sealed. Hence the valve cover breather(release excess crankcase pressure,etc). I'm not sure what your point is. Would you please elaborate.

He was saying that he did a boost leak check after he had just driven the car. While he was doing the test, he heard bubbling.