Author Topic: Oil on cold side of turbo?  (Read 1619 times)

ThePug

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Oil on cold side of turbo?
« on: October 05, 2017, 05:38:45 PM »
So I have oil leaking onto intake side of turbo, I can't see where it is coming from. Any ideas would be greatly appreciated

« Last Edit: October 06, 2017, 10:24:53 AM by IncorpoRatedX »

ThePug

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Re: Oil on cold side of turbo?
« Reply #1 on: October 05, 2017, 05:41:30 PM »
Another pic
« Last Edit: October 05, 2017, 05:48:29 PM by ThePug »

RXIN HED

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Re: Oil on cold side of turbo?
« Reply #2 on: October 05, 2017, 08:03:05 PM »
Would think any seal inside is toast. Is this TD?
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ThePug

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Re: Oil on cold side of turbo?
« Reply #3 on: October 05, 2017, 09:02:50 PM »
Yes sorry it is a 1992 Mitsubishi Strada 2.5 TUrbo diesel. Seal inside the turbo?

IncorpoRatedX

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Re: Oil on cold side of turbo?
« Reply #4 on: October 06, 2017, 10:26:17 AM »
Could be from the valve cover breather system, those diesels can fill an intake with oil if you're running a little loose on tolerances.

ThePug

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Re: Oil on cold side of turbo?
« Reply #5 on: October 06, 2017, 09:18:00 PM »
That line does have signs of oil in it, is there supposed to be a PCV valve there?

PajEvo

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Re: Oil on cold side of turbo?
« Reply #6 on: October 07, 2017, 04:00:48 PM »
An oil catch can is probably a good solution. Pull the hose off the turbo and see if its coated. Don't wear white while you do it though. Blow-by is the semi-norm, esp as Josh has said, if tolerances are a little loosey goosey.

Funny  - the paj evo came from the factory with a catch can, but the diesels don't. There are kits on ebay. Google for plenty of DIY solutions too. Buddy of mine just made one from a compressor water separator.

ThePug

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Re: Oil on cold side of turbo?
« Reply #7 on: October 07, 2017, 05:43:51 PM »
Which hose are you referring to, to remove off turbo?

ThePug

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Re: Oil on cold side of turbo?
« Reply #8 on: October 07, 2017, 05:48:02 PM »
PajEvo here is that pic with the bubbling pipe plug I was referring to.

« Last Edit: October 07, 2017, 08:33:00 PM by PajEvo »

PajEvo

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Re: Oil on cold side of turbo?
« Reply #9 on: October 07, 2017, 08:37:31 PM »
Just fixed your pic for you. After you attach it you have to insert it (says insert in the attachment menu right next to the image you insert).

That's your pop valve so your turbo won't overboost. I think its set to release around 12 or 13 psi? There's usually a little oil showing there. Do you have a boost guage? If so you can see what psi you're reaching.

And yes, hose off turbo.

ThePug

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Re: Oil on cold side of turbo?
« Reply #10 on: October 07, 2017, 08:48:08 PM »
Yes I have a boost gauge, it only shows 10 lbs  max. I'm assuming it shouldn't  leak around the threads of that pressure relief valve. Can I use teflon tape to seal it
« Last Edit: October 07, 2017, 09:19:11 PM by ThePug »

PajEvo

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Re: Oil on cold side of turbo?
« Reply #11 on: October 09, 2017, 07:59:56 PM »
Yes I have a boost gauge, it only shows 10 lbs  max. I'm assuming it shouldn't  leak around the threads of that pressure relief valve. Can I use teflon tape to seal it

I'm not sure on that one. I'd suggest the first thing you do is go on mitsubishilinks.com and grab the service manual. Not sure what seals those threads? I think you are in the ballpark for pressure from the factory for the turbo. Spring may be slightly fatigued. I seem to remember 11psi as the number, but I could be off. Grab the service manual first, and see where that takes you.