? Re: Boost Leak Tests and Turbo systems
Thread Starter
On The Tree
Joined: Apr 2010
Posts: 152
Likes: 17
From: Saskatchewan, Canada
? Re: Boost Leak Tests and Turbo systems I have a rear mount STS kit. I capped off the 4" end just before the throttle body, and i have my air compressor connector on the rear pipe just after the turbo.
I have gone through my system and caught the 5 separate leaks i had (3 holes drilled in the charge pipe by the installer and 2 silicone couplers not doing their job).
Now when i run the BLT and put around 10-15psi through my intake pipe from turbo to throttle body, there is no whistling any more....but there is a very slow leak. The compressor gauge shows that i am losing about 1 psi every few seconds.
Does anyone know why that would be if there are no apparent leaks/sound while doing the BLT?
I have gone through my system and caught the 5 separate leaks i had (3 holes drilled in the charge pipe by the installer and 2 silicone couplers not doing their job).
Now when i run the BLT and put around 10-15psi through my intake pipe from turbo to throttle body, there is no whistling any more....but there is a very slow leak. The compressor gauge shows that i am losing about 1 psi every few seconds.
Does anyone know why that would be if there are no apparent leaks/sound while doing the BLT?
You still have a leak it is just too small to be obvious.
The real question is whether or not you want to spend the time to find it or live with it.
If you choose to go looking, I would recommend the BOV and your block off plates for starters. If you still want to look very soapy water along the piping - look for bubbles.
The real question is whether or not you want to spend the time to find it or live with it.
If you choose to go looking, I would recommend the BOV and your block off plates for starters. If you still want to look very soapy water along the piping - look for bubbles.
I've found that confiscating a windex bottle or something and using it is the easiest way to go about it.
Make sure you have the soapy water mixed up right so it makes bubbles - otherwise you are just giving your charge piping a bath. I've never used it, but kid bubble blow **** would probably be ideal.
Good luck. I'm still guessing it is your BOV or one of the ends of your piping (where your pressing in air, or where you isolated it at the TB) that is doing the leaking.
Make sure you have the soapy water mixed up right so it makes bubbles - otherwise you are just giving your charge piping a bath. I've never used it, but kid bubble blow **** would probably be ideal.
Good luck. I'm still guessing it is your BOV or one of the ends of your piping (where your pressing in air, or where you isolated it at the TB) that is doing the leaking.
TECH Resident
Joined: Nov 2011
Posts: 916
Likes: 5
From: Las Vegas, NV
Don't forget to check the exhaust side of the house for leaks. Just as important. I found one on my I-Pipe and one on the wideband bung my builder (ex-builder) welded in for me. Got those sealed up and it helped with spoolin.
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Thread Starter
On The Tree
Joined: Apr 2010
Posts: 152
Likes: 17
From: Saskatchewan, Canada
I found it last season. Small pin point hole just forward of the rear axle as the charge piping was bending into the subframe connector. Turns out a previous mechanic thought it would be a good idea to puncture 3 small holes in my charge piping to "assist" moisture in getting out of an apparent sealed system. Now I have 3 clamps over the holes in my charge pipes.
This is one close to my BOV:
My tester:
My system is sealed and now I am hunting for a bigger turbo.
This is one close to my BOV:
My tester:
My system is sealed and now I am hunting for a bigger turbo.
well i just got my boost leak tester, so now ill have something that can tell me somthing alittle better. gonna have the exhaust smoked as well to see if anything else is leaking that im not seeing
