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Old 01-19-2013, 04:31 PM   #1
KFREX
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Default What hose is this?

*** Update ---> Everything I needed to know was answered by the guys who reply'd in this thread, which led me to find this post http://www.dirtyimpreza.com/forums/s...ad.php?t=25179 Case Closed.****

Early this morning I was looking around my engine for old/rotten hoses and I found some! This small hose comes right out of the turbo and has a 3-way-hose connector - of which 1 hose has an additional connector. I would prefer to replace all 3 of the small hoses + the connectors + the clamps so that I do not have to worry about this area again.

I have little experience with these things, but I feel Like I would be able to replace these hoses and plastic connectors as long as I had the new hoses, connectors and clamps. Can I buy these things at a local auto parts store, or do I need to head to Subaru?

(PS! If someone could tell me what parts theses 3 houses connect to I would greatly appreciate it. ^_^)

(****ty) Pics!!





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Last edited by KFREX; 01-27-2013 at 10:15 PM.
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Old 01-19-2013, 04:33 PM   #2
juandering
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It looks like one of the vacuum lines that run to the boost solenoid
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Old 01-19-2013, 04:44 PM   #3
Elbert Bass
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The hose with the broken connector goes to the wastegate control solenoid.
The grey/green "can" is the wastegate actuator. With that hose broken you can get too much boost from the turbo and exceed the maximum turbine speed - not good. It is best to use the factory hoses, connectors and new clamps for the best fit since they are under pressure when in boost.
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Old 01-19-2013, 05:10 PM   #4
KFREX
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Quote:
Originally Posted by juandering View Post
It looks like one of the vacuum lines that run to the boost solenoid
Quote:
Originally Posted by Elbert Bass View Post
The hose with the broken connector goes to the wastegate control solenoid.
The grey/green "can" is the wastegate actuator. With that hose broken you can get too much boost from the turbo and exceed the maximum turbine speed - not good. It is best to use the factory hoses, connectors and new clamps for the best fit since they are under pressure when in boost.
Thanks for the info and advice you guys! I get to learn new things about my car every day! Looks like I will be leaving it parked until I can get the replacement hoses from Subaru on monday, glad I learned about all of this!
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Old 01-19-2013, 05:27 PM   #5
Ziggyrama
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FYI, one of those hoses has a restrictor pill in it. So, make sure to get an OEM replacement for that exact hose or you'll have boost control issues.

Is your car running OK like this? I figure you should see boost control problems if your solenoid is disconnected.
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Old 01-19-2013, 06:41 PM   #6
juandering
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Quote:
Originally Posted by Ziggyrama View Post
FYI, one of those hoses has a restrictor pill in it. So, make sure to get an OEM replacement for that exact hose or you'll have boost control issues.

Is your car running OK like this? I figure you should see boost control problems if your solenoid is disconnected.
That's what I was thinking.

If I'm not mistaken, the boost solenoid/waste gate solenoid has two ports, one that has a line running to the compressor side of the turbo that's tee'd with the waste gate actuator while the other line runs to the turbo inlet
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Old 01-19-2013, 07:18 PM   #7
Gallo2011
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I hate to tell you this, but you have a much bigger problem. It appears someone lost parts of at least 3, if not 4, fingers in your engine bay. Whoever it is is probably pissed!
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Old 01-19-2013, 07:22 PM   #8
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You REALLY need that line connected or the car will overboost.

The restrictor is in the other part of the tee between the compressor and wastegate so all you need is a replacement for that section between the tee and solenoid.
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Old 01-19-2013, 07:50 PM   #9
KFREX
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Quote:
Originally Posted by Ziggyrama View Post
FYI, one of those hoses has a restrictor pill in it. So, make sure to get an OEM replacement for that exact hose or you'll have boost control issues.

Is your car running OK like this? I figure you should see boost control problems if your solenoid is disconnected.
I have been dealing with some other issues under the hood of this WRX for the last few months, thus I have been driving it like a Grandma. But now that those issues are clearing up and I can have fun driving it again I have noticed that my boost situation has noticeably changed for the worse.

I still receive power from the turbo... but it feels weaker and it takes longer for the power to actually kick in. And then, when it is finally there it seems to fade away just as soon as it came.

I might be wrong about about this next part, but it feels like When I first bought the car @ 80k miles the turbo would deliver power in the early 3K RPMS and would max out right around 6k RPMS (My stock turbo gauge would read about +.5 at that max). But now I feel the power come in the late 3K RPMS and I lose it just after 5K RPMS (with the turbo gauge reading +.3 or *maybe* +.4 if Im lucky) So...

This morning I had assumed the there was a vacuum leak somewhere, so I decided to look around my engine compartment and just see if anything stood out. I noticed 2 hoses joined by a plastic link, and that one of the hoses looked very old and worn. Upon further inspection I simply lifted the connection to get a better look and the plastic link simply broke off on one side, which is when I took pics with my iPhone and started this thread.

Upon further inspection The hose running from the actual solenoid seems to be in great shape, but the 3 Vacuum Hoses, Clamps and Plastic connectors that form the " T " junction are all crappy/old and are going to be replaced monday with OEM Parts like you mentioned! Thanks for the tip about the restrictor

Here are some more photo's!

If you look close you can see the plastic bit still in the end of the hose...






The Deterioration is actually the underside of the hose, which actually sits just across the surface of the waste gate actuator. Does this look like a result of heat damage to the hose from the heat of the actuator?
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Old 01-19-2013, 08:13 PM   #10
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Quote:
Originally Posted by Gallo2011 View Post
I hate to tell you this, but you have a much bigger problem. It appears someone lost parts of at least 3, if not 4, fingers in your engine bay. Whoever it is is probably pissed!
ROFL! I thought maybe if I stuffed a bunch of fingers down in there it might fix my problem. I think I just leave em and see....

Quote:
Originally Posted by jamal View Post
You REALLY need that line connected or the car will overboost.

The restrictor is in the other part of the tee between the compressor and wastegate so all you need is a replacement for that section between the tee and solenoid.
Oh wow, good to know!! Luckily I can leave my car in the garage, and wont have to turn it on until after I have fixed this situation. I don't wanna risk blowing anything up.

1)Thanks for the advice on needing only the 1 hose, but is there any reason not to replace the whole junction? Seems like a few extra $$$ might provide some piece of mind? (Although the other 2 hoses do not have the deterioration that the one posted in the photos, they **look** fine.)

2) Will my Local Subaru Dealer & Service Center have these Hoses, Clamps, Connectors/Restrictors on hand?

3) Do I need to drain any fluids for this swap?

Thanks for all the replies everyone! Excited to be learning this stuff. I really appreciate the help
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Old 01-20-2013, 08:57 AM   #11
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1. There is no reason to not to replace the entire section. If you replace it, make sure you get the restrictor pill in the right spot (coming off the compressor housing).
http://i1197.photobucket.com/albums/...ubaruboost.jpg

2. More than likely. I tried to get them at my stealership once and no go. Now that I do not need them, they carry them. If they do not have them and you want/need to drive just replace the deteriorated hose with some matching hose from a Napa or where ever until the hose comes in from Subaru.

3. No need to do any fluids. If there are fluids in those lines it would indicate a much larger problem.

I would try to add a couple inches (not too long) to the hose to make sure it is not routed across a hot area, thus avoiding a problem in the future.
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Old 01-20-2013, 05:36 PM   #12
KFREX
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You rock DZXN, Thanks for the reply!

I am going to try and replace everything, we will see what the dealership has in store for me tomorrow morning.
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Old 01-22-2013, 01:56 PM   #13
KFREX
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So I had to order the replacement parts to fix this, but they should be in on wednesday, and easy to reinstall. Thanks to all who replied!
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