|
|
|
|
Thread Tools | Display Modes |
12-26-2012, 09:50 PM | #1 |
Scooby Specialist
Member#: 269388
Join Date: Jan 2011
Chapter/Region:
SCIC
Location: SoCal SD / LA
Vehicle:2011 Impreza WRX obp |
Boost leak help -11 WRX
Mods are
Catback COBB OTS stage 1 Boost gauge Oil Pressure gauge I was hitting boost on a fwy on ramp and I started noticing this weird noise - similar to a failed silent fart. I just installed the defi boost gauge about a week ago and flashed to stage 1. (was previously stage 2 w/DP but took that off) Where does that boost leak sound like it's coming from? I hear it on the left front driver side - so I imagine it's the T connector. I have the T connected mounted about 2.5 inches after the BPV -> T --< Sender & whatever else it connects to lol. I checked the T connector today and it looks okay to me, I took off the crappy zip ties on the tubes and replaced it with 18lb tensile str zip ties but I'm still getting the noise. Here's a video I don't think it's the TB --> intercooler because I've had it on stage 2 before and it was all good at 17 psi. I'm only on 15psi w/OTS stg 1 If you look at the video, it rises up to almost 15, makes the fart, then drops to 10 and rises again, and farts and drops. Any input is well appreciated..
* Registered users of the site do not see these ads.
|
12-26-2012, 10:06 PM | #2 |
*** Banned ***
Member#: 176615
Join Date: Apr 2008
Chapter/Region:
NWIC
Location: Wa
Vehicle:??? sleeper rex |
check the bpv gasket, or check all your hoses again.
|
12-26-2012, 10:13 PM | #3 |
Scooby Specialist
Member#: 266177
Join Date: Dec 2010
Chapter/Region:
MAIC
Location: Manassas Park, VA
Vehicle:2006 MX-5 RED |
Have you messed with the TMIC at all? Check the throttle body hose, each side has a rubber piece that is known to wear. My car was making that noise and this was what mine looked like:
Just take the pieces off each end of the throttle body hose and put it all back together nice and tight. |
12-26-2012, 10:22 PM | #4 |
Scooby Specialist
Member#: 269388
Join Date: Jan 2011
Chapter/Region:
SCIC
Location: SoCal SD / LA
Vehicle:2011 Impreza WRX obp |
awesome picture
Throttle body hose is the thick hoses that comes out of the intercooler right? I just take it off and put it back together? o.0 Do I have to take off the intercooler to access the hoses? |
12-26-2012, 10:27 PM | #5 |
Scooby Specialist
Member#: 266177
Join Date: Dec 2010
Chapter/Region:
MAIC
Location: Manassas Park, VA
Vehicle:2006 MX-5 RED |
Yes, it is the one that connects on the driver side. You will most likely have to take the TMIC off to get to it, and unfortunately because of the position you can't really confirm if thats the problem until you take it off. But if its like me (and a few others on here) once you unbolt the TMIC, it will just slide right off because those rubber things have come lose or ripped.
If you have the stock TMIC, it should only take 30-45 minutes, and even thats being liberal with time. Take the intercooler off, you will see the throttle body hose, each end has the worm clamp and the rubber piece, just take the rubber piece out, then put it back together. |
12-27-2012, 12:38 AM | #6 |
Scooby Specialist
Member#: 269388
Join Date: Jan 2011
Chapter/Region:
SCIC
Location: SoCal SD / LA
Vehicle:2011 Impreza WRX obp |
The throttle body rubber hose connector was loose! just like you said stanrc!
I have a couple concluding questions at the end though For those with a similar noise here are some pics for reference When I took off the intercooler the rubber connector was stuck on the intercooler and I can also see the side of the throttle body hose coming off I could tell from the white gooey looking thing on the TB hose intercooler removal was easy - take off bracket bolts with 12mm and bpv with 11 or 10 mm i forgot. There werent any gaskets on the turbo->IC or IC->BPV so nothing to worry about there. Then you just yank it toward passenger side and it should come right out. The End I saw some oil where the BPV opening to the IC opening and also inside the TB hose should i be concerned or is that normal just to grease stuff up? |
12-27-2012, 06:39 AM | #7 |
Scooby Specialist
Member#: 266177
Join Date: Dec 2010
Chapter/Region:
MAIC
Location: Manassas Park, VA
Vehicle:2006 MX-5 RED |
Glad that was the fix and great pictures. As for the oil, that is the usual blow by from these engines. That shouldn't be anything to worry about.
|
01-10-2013, 10:01 AM | #8 |
Scooby Specialist
Member#: 322775
Join Date: Jun 2012
Chapter/Region:
Tri-State
Location: SNJ
Vehicle:2012 WRX-4Dr SWP |
Hmmmm same problem im having...
|
01-10-2013, 11:39 AM | #9 |
Scooby Guru
Member#: 261612
Join Date: Oct 2010
Location: Minneapolis, MN
Vehicle:2002 WRX - 750WHP 9.5s @ 150mph |
These are good pictures and a very common problem. Even at stock boost this can occur, but any increase in boost makes it much more likely. A bit of oil in these components is normal. I wouldn't worry about it, but maybe check it once in a while because that does look like a somewhat decent amount.
EVERY 08+ WRX should remove those rubber end caps from BOTH ends of the throttle body hose. You should also add a zip to to the vacuum line that goes from the top of the BPV to the back of the intake manifold. The nipple on the intake manifold does not have a barb and can easily slide off. |
01-10-2013, 12:37 PM | #10 | |
Scooby Newbie
Member#: 304018
Join Date: Dec 2011
Chapter/Region:
RMIC
Location: Greenwood Village, CO
Vehicle:2011 WRX Sedan TP Stage 1 |
Quote:
1. Bypass Valve leaking 2. Plastic end tanks separating on the stock TMIC 3. This problem (throttle body/IC hose popping off) Fortunately the TB/IC thing seems to be an easy fix. I will most likely follow your advice and remove those POS end caps. I will probably invest in some t-bolt clamps as well. |
|
01-16-2013, 01:47 AM | #11 | |
Scooby Specialist
Member#: 269388
Join Date: Jan 2011
Chapter/Region:
SCIC
Location: SoCal SD / LA
Vehicle:2011 Impreza WRX obp |
Quote:
|
|
01-16-2013, 08:24 AM | #12 | |
Scooby Guru
Member#: 261612
Join Date: Oct 2010
Location: Minneapolis, MN
Vehicle:2002 WRX - 750WHP 9.5s @ 150mph |
Quote:
Those are all common. Also the hose that goes from the top of the BPV to the back of the intake manifold can pop off the intake manifold. Needs a zip tie to hold it on. if this pops off it causes a pretty bad boost leak. I don't see this one as much on stock cars. Usually higher boost (20+ psi). It's blow by. Some cars have more than others. |
|
01-16-2013, 11:35 AM | #13 |
Scooby Specialist
Member#: 245218
Join Date: Apr 2010
Chapter/Region:
South East
Location: FL
Vehicle:2013 STI Limited |
90% of these complaints are due to the Throttle Body to Intercooler hose. The OEM one is crap and breaks open over stock boost levels. I think Subaru did it on purpose.
|
01-16-2013, 11:41 AM | #14 |
Scooby Newbie
Member#: 343587
Join Date: Jan 2013
|
Have you thought about installing an oil ketch can?
|
01-16-2013, 12:18 PM | #15 | |
Scooby Specialist
Member#: 269388
Join Date: Jan 2011
Chapter/Region:
SCIC
Location: SoCal SD / LA
Vehicle:2011 Impreza WRX obp |
Quote:
|
|
08-07-2013, 02:07 AM | #16 |
Scooby Newbie
Member#: 364613
Join Date: Aug 2013
Location: SoCal
Vehicle:2011 WRX |
I am also experiencing this same problem regarding boost leak, but I haven't taken the intercooler off yet. Just out of curiosity, does anybody know if there is an after market hose that can be attached in order to avoid these leaks in the future? Or will the stock hose be sufficient with the damaged rubber portion taken off?
|
08-07-2013, 04:24 AM | #17 | |
Scooby Newbie
Member#: 274903
Join Date: Feb 2011
Chapter/Region:
SCIC
Location: Diamond Bar, CA
Vehicle:2011 WRX Sedan Dark Gray Metallic |
Quote:
http://www.avoturboworld.com/avoshop...hose-p-33.html http://www.tomiokaracing.com/index.p...legacy-gt.html |
|
08-07-2013, 06:57 AM | #18 |
Scooby Newbie
Member#: 341182
Join Date: Dec 2012
Chapter/Region:
Tri-State
Location: South Jersey
Vehicle:2011 WRX SSM |
It should also be said BE VERY CAREFUL WITH THE TURBO-> INTERCOOLER BOLTS when removing the IC
|
08-07-2013, 08:25 AM | #19 |
Scooby Specialist
Member#: 316364
Join Date: Apr 2012
Chapter/Region:
MAIC
Vehicle:2012 WRX |
|
08-07-2013, 09:25 AM | #20 |
Scooby Specialist
Member#: 310506
Join Date: Feb 2012
Chapter/Region:
South East
Location: Florida
Vehicle:2005 WRX STi CGM |
As others have said, the oil is normal. The heads release the crank case gases through the PCV system, which is connected to the turbo inlet. This puts a pretty heavy pull on the system to allow for proper ventilation, and oil can subsequently be pulled with the air.
Do a boost leak test with a local subie owner |
08-07-2013, 12:30 PM | #21 |
Scooby Newbie
Member#: 364650
Join Date: Aug 2013
|
Just a suggestion for future reference. You can make a fairly affordable boost leak detector with some pvc pipe and a schrader valve. It uses compressed air in the charge pipes with the engine off to detect for any air leaks.
|
08-07-2013, 02:15 PM | #22 | |
Scooby Specialist
Member#: 305107
Join Date: Dec 2011
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:2016 GT 5.OHH DIB |
Quote:
https://shop.bostonmotorsports.com/V...RX_p_1183.html fit perfect, and i reused the oem worm clamps, held fine. ive since upgraded that POS stock IC though this! i ended up cross threading one of the bolts, god what a nightmare that stupid IC is.. |
|
08-07-2013, 08:12 PM | #23 |
Scooby Specialist
Member#: 137405
Join Date: Jan 2007
Chapter/Region:
MAIC
Location: Baltimore
Vehicle:2011 WRX 6spd GTX3076r |
|
08-07-2013, 09:00 PM | #24 |
Scooby Specialist
Member#: 305107
Join Date: Dec 2011
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:2016 GT 5.OHH DIB |
jesus, what part of the intake/intercooler setup doesnt have to be replaced!
|
08-07-2013, 11:30 PM | #25 | |
Scooby Newbie
Member#: 364291
Join Date: Aug 2013
Chapter/Region:
TXIC
Location: Clear Lake TX
Vehicle:13 WRX Limited WRB |
Quote:
Had to call Eric at torqued Performance to find out where the hell it went, luckily he answered the phone seeing as it was 10 at night. |
|
Thread Tools | |
Display Modes | |
|
|