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Author Topic: did I blow my turbo?  (Read 4587 times)

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Offline RE543

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did I blow my turbo?
« on: May 04, 2014, 07:36:24 PM »
Today I was driving and when I hit the gas my exhaust got quieter and I heard a lot more air noise from under the hood.  The car just dogged out. It was still pretty quick but to me felt like no boost.  This in my first turbo car so I don't know what a blown turbo feels like.   :tickedoff: :cry:
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline Kavik

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Re: did I blow my turbo?
« Reply #1 on: May 05, 2014, 12:11:56 AM »
Sounds more like blowing off an intercooler pipe from the description (especially the under hood air noise)

Edit: browsing through the recent posts page apparently doesn't show attached images
Yeah, obviously a leak there, but also looks like an awful lot of oil sprayed out  :-(
« Last Edit: May 05, 2014, 12:14:07 AM by Kavik »
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Offline Pitcrew

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Re: did I blow my turbo?
« Reply #2 on: May 05, 2014, 01:18:36 AM »
Usually when a boost tube blows off tho, the car stalls out...atleast thats my experiance.  :-D

Any unusual amount of smoke coming out of the exhaust? Extra oil in the intercooler piping?
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Offline hydrochloric

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Re: did I blow my turbo?
« Reply #3 on: May 05, 2014, 02:04:13 AM »
Usually when a boost tube blows off tho, the car stalls out...atleast thats my experiance.  :-D

Any unusual amount of smoke coming out of the exhaust? Extra oil in the intercooler piping?

Wouldn't stalling depend on the size of the leak?
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Offline Pitcrew

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Re: did I blow my turbo?
« Reply #4 on: May 05, 2014, 05:40:53 AM »
yea, but if a pipe BLOWS off, its not leaking....
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Offline RE543

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Re: did I blow my turbo?
« Reply #5 on: May 05, 2014, 06:53:16 AM »
Well in the attached image theres the pipe that leads to my intercooler.  It has a good amount of oil on it but not that much looks new. The hose clamps are all tight too.  There may be a loose clamp I can't see? Or a rip in a hose? Its not every time I get on it that it does this but when it happens you can really tell
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline Kavik

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Re: did I blow my turbo?
« Reply #6 on: May 05, 2014, 08:27:45 AM »
Usually when a boost tube blows off tho, the car stalls out...atleast thats my experiance.  :-D
Does it? Lol my only experience with this was when it happened once on my blue wagon.....there was a loud bang, then it drove okay other than no boost and i could hear more noise under the engine.  Granted, that was a totally different setup. 

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Offline RE543

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Re: did I blow my turbo?
« Reply #7 on: May 05, 2014, 09:20:37 AM »
I can kinda hear more noise from under the hood sometimes.  Like sometimes it acts normal but other times if I hop on it it dogs and doesn't go too fast. There will be a lot of underhood noise.
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline Kavik

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Re: did I blow my turbo?
« Reply #8 on: May 05, 2014, 10:32:02 AM »
Can you be more specific about the noise?
Our, one it starts baking the noise, is it still audible at idle, do you could narrow diem the location a bit?
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['14 Mazda3 SGT]     ['03 Sonic Yellow WRX Wagon]     ['05 WRB WRX Wagon]     ['02 PSM WRX Sedan]

Offline RE543

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Re: did I blow my turbo?
« Reply #9 on: May 05, 2014, 10:59:18 AM »
Well there's the normal whistle sound. And sometimes I hear what sounds like a bearing every once and a while.  Then sometimes when I gas it I my exhaust goes quieter and I hear what sounds like the the normal turbo noise but louder and it sounds like air is escaping.  I don't really know how to describe it very well because the only way I can makes it really sound bad.
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline IntReXin

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Re: did I blow my turbo?
« Reply #10 on: May 05, 2014, 11:38:40 AM »
Go through and tighten everything. A oil change and check for metal flakes, are you low on oil?

Any check engine lights? theres always a cel lol

Offline RE543

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Re: did I blow my turbo?
« Reply #11 on: May 05, 2014, 12:18:35 PM »
My light is on for o2 sensor but there are no new codes. I checked my oil and it was still good. Maybe a little low. It was a little under full no nowhere near anywhere to worry about. Im going to pull the intercooler off and see if all my connectios are good and how much oil is in the system
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline Redroof2.0

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Re: did I blow my turbo?
« Reply #12 on: May 05, 2014, 06:41:51 PM »
Just as a thought, examine the hoses leading to the bypass valve.  It's possible it's leaking and venting whatever boost you have back into the intake.
That would allow the car to run properly while having absolutely no balls.   

Another thought:  Stock boost control solenoid?   Is there someone with a good one you can swap out for a test?

If that turns out fine, maybe hook the turbo's wastegate cannister up to a bike pump and put pressure through it.  I don't know what the stock WRX wastegate spring is set for, but verify the wastegate opens at that pressure.  Probably in the ballpark of 6-8psi.  If the wastegate arm doesn't move much or at all, then you may have a collapsed spring or other damage and the wastegate might be stuck open, robbing you of boost.
If you're adventurous, you might also consider taking off the downpipe to peek a the flapper valve and verify it.
« Last Edit: May 05, 2014, 06:47:44 PM by Redroof2.0 »
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Offline RE543

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Re: did I blow my turbo?
« Reply #13 on: May 05, 2014, 06:58:11 PM »
It acts normal most of the time. But if im cruising say in 4th And a press down the pedal to excelerate it just makes a lot of noise and seems to excelerate slower.  Im guessing the turbo is blown but theres something conditionally wrong and doesnt work sometimes which is even more confusing
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline hydrochloric

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Re: did I blow my turbo?
« Reply #14 on: May 06, 2014, 02:00:53 PM »
It acts normal most of the time. But if im cruising say in 4th And a press down the pedal to excelerate it just makes a lot of noise and seems to excelerate slower.  Im guessing the turbo is blown but theres something conditionally wrong and doesnt work sometimes which is even more confusing

If by blown you mean bearings shot and allowing the impellers to contact the housings, it's not.  Not if it EVER works correctly.  That would be obvious, noisy and by now it would be billowing oil smoke too.  It still sounds way more likely that there's a leak, or as previous the wastegate's not functioning correctly.
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Offline RE543

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Re: did I blow my turbo?
« Reply #15 on: May 06, 2014, 02:40:55 PM »
I figured it wasn't like completely blown up but on its way out or something.  Bad seal somewhere or something like that.  Im going to really dig into it this weekend and see if theres anything not right.
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline Redroof2.0

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Re: did I blow my turbo?
« Reply #16 on: May 07, 2014, 05:58:43 PM »
So you're running into problems in higher gears?

That's a load issue.  Several things define load and all of them are electronic.   My kill-list would include the factory boost-control solenoid, the MAF sensor, O2 sensor and even ignition components such as spark plugs.
It'd help if you had someone who could scan the vehicle and search for history of misfires or any active ignition retard that might be listed under Mode 6.  That'd help a bunch.
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Offline RE543

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Re: did I blow my turbo?
« Reply #17 on: May 09, 2014, 07:30:21 PM »
But its not every time. Or predictable at all. I looked at the likes going to my waste gate solenoid and inspected it better than I did before.  On the under side I of the tube going into the solenoid right here the female part meets the end of the male part I found a crack. Not dry rotted but a rip right where its over the male part. It lool like it would be able to let pressure out sometimes and others.  I just wrapped it in electrical tape for now to see if that makes a difference.  Could this have been my problem?  I haven't gotten a second to step on it yet and see if it changed anything tho
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline hydrochloric

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Re: did I blow my turbo?
« Reply #18 on: May 09, 2014, 10:08:43 PM »
But its not every time. Or predictable at all. I looked at the likes going to my waste gate solenoid and inspected it better than I did before.  On the under side I of the tube going into the solenoid right here the female part meets the end of the male part I found a crack. Not dry rotted but a rip right where its over the male part. It lool like it would be able to let pressure out sometimes and others.  I just wrapped it in electrical tape for now to see if that makes a difference.  Could this have been my problem?  I haven't gotten a second to step on it yet and see if it changed anything tho

The unpredictable part points at electrical, but it's absolutely a good thing you found and repaired the rip, that can't help.  I'd replace the hose, but the tape will work okay for now.
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline RE543

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Re: did I blow my turbo?
« Reply #19 on: May 09, 2014, 10:10:46 PM »
I definitely plan on replacing it but yeah tape for now. I haven't seemed to have the problem since thus morning when I taped it. I feel like this was way too simple a fix
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline hydrochloric

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Re: did I blow my turbo?
« Reply #20 on: May 10, 2014, 04:28:27 PM »
I definitely plan on replacing it but yeah tape for now. I haven't seemed to have the problem since thus morning when I taped it. I feel like this was way too simple a fix

Don't look a gift horse in the mouth!  :-D  I had a bad misfire issue that I spent an hour trying to sort out when a friend just reached in and pushed the spark plug wire deeper into its rubber molding ([I don't have stock or even Subaru ignition] not the whole assembly onto the plug).  Fixed.  DERP.
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline RE543

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Re: did I blow my turbo?
« Reply #21 on: May 18, 2014, 05:16:03 PM »
Okay im certain im running no boost now
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline klarowe

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Re: did I blow my turbo?
« Reply #22 on: May 18, 2014, 08:19:17 PM »
My money is on wastegate related or bypass valve (boost control solenoid, wastegate spring, etc).
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Offline hydrochloric

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Re: did I blow my turbo?
« Reply #23 on: May 18, 2014, 10:38:13 PM »
Have you replaced that split line?  I'd be inclined to replace ALL the little rubber lines at this point, from age and such.

You might want to try a boost leak test, it basically fills the intake with smoke so you can pinpoint leaks.  There's a DIY on RS25.
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Offline RE543

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Re: did I blow my turbo?
« Reply #24 on: May 19, 2014, 07:42:44 AM »
Ill replace lines but I feel like the problem is bigger. Like wastegate or bov or something like that
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus
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