Turbo's going out

swickings · 08-21-2013, 04:26 PM

Is there is simple way to see if my turbos are leaking or going out? I feel a loss of power.

E90Company · 08-21-2013, 04:28 PM

Drop your downpipes look for any oil in the exhaust housings.

Snaggletooth · 08-21-2013, 04:33 PM

Quote:

Originally Posted by E90Company

Drop your downpipes look for any oil in the exhaust housings.

Or get a snake cam and look in that way if possible. You may also find oil in the downpipes, which would be slightly easier to access.

E90Company · 08-21-2013, 04:37 PM

Quote:

Originally Posted by Snaggletooth

Or get a snake cam and look in that way if possible. You may also find oil in the downpipes, which would be slightly easier to access.

Snake cam through the exhaust? Water jacket is on the compressor side so you would see no oil there unless you have major shaft play.

TexE90 · 08-21-2013, 04:47 PM

Do you have the ability to data log and check for underboost that may be caused by a vacuum leak and not bad turbos?

Snaggletooth · 08-21-2013, 04:51 PM

Quote:

Originally Posted by E90Company

Snake cam through the exhaust? Water jacket is on the compressor side so you would see no oil there unless you have major shaft play.

Yes, through exhaust. It would be effectively the same as you're suggesting just a more convenient way than pulling the downpipes and o2 sensors. That's how I usually detect and diagnose turbo problems.

zareh94 · 08-22-2013, 03:47 PM

can i drop the downpipes and check for oil after driving it or it should be checked directly before a cold start ?

enrita · 08-22-2013, 03:54 PM

If they are bad oil will be there

135Pats · 08-22-2013, 04:10 PM

Like Enrita said, if your seals are shot you’ll be able to tell quickly. Irrelevant whether the car was hot or cold prior to pulling the downpipes.

I still think people should look into quick, cheap fixes before assuming it’s the turbo. Our PCV system SUCKS. In my case sadly it is indeed the turbo seal, but that’s not always what happens.

swickings · 08-26-2013, 02:05 PM

Thanks for all you info everyone, and the good news my turbos are good. I just cant figure out the feel of the power loss between my 07 and 08 335i

007_e350 · 08-26-2013, 04:40 PM

Quote:

Originally Posted by swickings

Is there is simple way to see if my turbos are leaking or going out? I feel a loss of power.

Check how much u're boosting - physically you wont be able to tell, my rear's leaking oil but boosts fine, JB4 can display boost on fuel or oil

08-21-2013, 04:26 PM	#1
swickings Private 17 Rep 55 Posts Drives: 2007 335i Join Date: Mar 2013 Location: New Mexico iTrader: (0)	Turbo's going out Is there is simple way to see if my turbos are leaking or going out? I feel a loss of power. __________________ 2007 E90 335i (R.I.P) 2008 E90 335I- Current
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08-21-2013, 04:28 PM	#2
E90Company Major General 194 Rep 6,136 Posts Drives: Car Join Date: Mar 2012 Location: FL iTrader: (2)	Drop your downpipes look for any oil in the exhaust housings.
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08-21-2013, 04:47 PM	#5
TexE90 Banned 10 Rep 134 Posts Drives: 2007 335i E90 Join Date: Nov 2012 Location: United States iTrader: (1)	Do you have the ability to data log and check for underboost that may be caused by a vacuum leak and not bad turbos?
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08-22-2013, 03:47 PM	#7
zareh94 Private 5 Rep 98 Posts Drives: bmw 335i e92 2008 Join Date: Aug 2013 Location: beirut iTrader: (0)	can i drop the downpipes and check for oil after driving it or it should be checked directly before a cold start ?
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08-22-2013, 03:54 PM	#8
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	If they are bad oil will be there
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08-22-2013, 04:10 PM	#9
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	Like Enrita said, if your seals are shot you’ll be able to tell quickly. Irrelevant whether the car was hot or cold prior to pulling the downpipes. I still think people should look into quick, cheap fixes before assuming it’s the turbo. Our PCV system SUCKS. In my case sadly it is indeed the turbo seal, but that’s not always what happens. __________________ E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
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08-26-2013, 02:05 PM	#10
swickings Private 17 Rep 55 Posts Drives: 2007 335i Join Date: Mar 2013 Location: New Mexico iTrader: (0)	Thanks for all you info everyone, and the good news my turbos are good. I just cant figure out the feel of the power loss between my 07 and 08 335i __________________ 2007 E90 335i (R.I.P) 2008 E90 335I- Current
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