The Batmobile_Engage Member Journal

[Batmobile_Engage]

 

[Batmobile_Engage]

Let's hope this holds. Just added an extra bead of super glue gel to each side. It's sitting in the sun on the windowsill curing right now. Will probably try it out later. I think I need to buy a few needlenose vice grips to clamp all the vacuum/boost lines though.

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[HolyCrapItsFast]

Nice work! Take pictures when you have it connected :tup:

 

[livid_wrx_]

Good luck

 

[Batmobile_Engage]

[MENTION=9]HolyCrapItsFast[/MENTION]

 

[Batmobile_Engage]

No idea where this leak is so far. :-(

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[livid_wrx_]

Soap in spray bottle and work your way through.

 

[Batmobile_Engage]

Doing that right now. No luck.

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[livid_wrx_]

Any chips or possible holes in the fmic?

 

[Batmobile_Engage]

The leak is after that. Between my MAF and engine, somewhere in the throttle body area. (I have a blow-thru MAF.)

I'm gonna have to pull off the charge pipe at the throttle body and connect the tester there.

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[Batmobile_Engage]

No... you need to put everything back together and attach the boost leak tester to the air intake. Then pressurize the system from there. You need to clamp off every hose that comes off the intake or turbo inlet including the one that goes to the PCV. Use needle nose vice grips to clamp off hoses indicated below.

View attachment 7319



To test the PCV you need to locate the hoses that come off of it and clamp the one that goes to the turbo inlet and then remove the one going to the manifold. Blow through the line that came from the manifold. If you can blow through then the PCV is bad.

View attachment 7320

My throttle body doesn't look like that.

But I assume the similar sized hose in my throttle body is the one you are referring to but I'm not sure as it seems to be going to the block and not the intake manifold. Another thing I'm not sure of, you said to disconnect that hose and blow through it. Blow through the hose towards the block or manifold, or the other way into the throttle body assembly?

Sorry, I'm just not that knowledgeable in this stuff.

Viewed from Driver's side

Passenger Side

 

[Batmobile_Engage]

Driver side

Passenger Side looking straight down

 

[Batmobile_Engage]

https://vimeo.com/182323513

What the hell is that creaking noise? [MENTION=9]HolyCrapItsFast[/MENTION]

 

[livid_wrx_]

Something is contracting/expanding

 

[Batmobile_Engage]

Something is contracting/expanding

PCV valve maybe? No idea.

 

[livid_wrx_]

Sounds like metal, but the pcv would burst before the intake had enough pressure to flex.

 

[Batmobile_Engage]

That was only like 25 psi.

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[livid_wrx_]

Exactly, so my guess is pcv.

 

[Batmobile_Engage]

I don't understand very well how our PCV systems are plumbed and so forth, so I have no idea.

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[Batmobile_Engage]

@HolyCrapItsFast

I've been reading more about the PCV system and I think I understand a little more of what's going on here. Does the PCV valve you were referring to that comes out of the block and goes to the throttle body (I think) operate as a one way check valve (unless it's broken)? I wonder if I should consider replacing that valve, which seems somewhat possible without tearing down the top half of the motor.

I need to get another pneumatic hose fitting before I can blow air through that valve (or attempt to). I'll see what I can find tomorrow.

I guess I also don't fully understand how a broken pcv valve would cause this problem. Can anyone help me out there?

Idk if this is true or not, but I read somewhere that Subaru recommends replacing the valve every 15,000 miles. That sounds like some ridiculous bullshit to me, but who knows...