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Unsure What Is The Problem With My Rb25

fat_stag

By fat_stag,
in Engines & Forced Induction

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fat_stag Collaborator

fat_stag

Posted
Posted (edited)

hey guys im havin some problems diagnosing whats causing my car to play up.

ill list what is happening and what i have checked.

problems: constant whit/blue somke out the exhaust.

wont hold/make max boost

miss firing

motor fluds with oil when gets hot.

when i took the intake pipe off the turbo there was oil all over the inside all the way to the pod filter

goes through alot of oil.

things i have checked: no shaft play in turbo

just disconnected the oil catch can and put it back to standard to check.

called hypergear to ask about it all and they suggested the the catch can bisso because of the turbo not havin shaft play so they dont think its a oil seal but thats what the previous owner said it was.

the turbo is a garret t04 hyflowed with bigger wheels.

would be much appreciated for a few suggestions to try out. cheers guys

Edited by fat_stag
hypergear Grand Master

hypergear

Posted
Posted

Well. I don't felt the right to charge you $440 to replace some thing that doesn't require to be done.

Your engine's leaking oil all over the places not just the turbo.

So get you engine oil, catch can and all other issues fixed fist. We will have a look at your turbo if its still making blue smoke by then.

PM-R33 Grand Master

PM-R33

Posted
Posted

Can you elaborate on "motor fluds with oil when gets hot". What do you exactly mean by this? What oil is in the vehicle and when did this start happening? Did you do something the last few days before this started happening?

GTScotT Grand Master

GTScotT

Posted
Posted

how did you install the catch can?

once had a perfectly good turbo shit a seal because a catch can got installed with no breather, 2 outlets on the rockers to 2 inlets on the catch can and no breather anywhere lol... insta-goodbye T28BB :)

was there a way for your catch can setup to breathe properly? or have you made a similar faux pas

hypergear Grand Master

hypergear

Posted
Posted

Well once you clear breathers and fix other issues to allow oil drain back into the sump, the turbo will stop smoking.

In most of cases If the turbo's got no shaft play and leak oil through both seals its means there is a oil drainage problem. Once fixed the turbo stops smoke. No need to pay $$$ and overhaul a good turbo.

GTScotT Grand Master

GTScotT

Posted
Posted

in my case the catch can was only connected wrong for a total of 30 seconds, and the car would drop its sump out the exhaust from milperra to ramsgate it was spewing out oil so bad... irreversable damage to the seals.

this could be the case here, yet yes agreed with hypergear, trial and error try fix whats blocking up if there is and go from there.

gotRICE? Veteran

gotRICE?

Posted
Posted

Is your PCV blocked by chance?

I had a smoke issue with my RB25 when i had it set up with a blocked PCV valve catch can setup.

Put the stock PCV valve back in, and it went away and never came back.

Only issue is being at idle i can occasionally get rev fluctuation due to the atmo venting breathers.

(because the pvc is connected and gets a bit of un AFM'd air via the breathers :) )

fat_stag Collaborator

fat_stag

Posted
  • Author
Posted (edited)

yea cheers guys for the tips and sorry stao i hope you didnt take any of this as badmouthing you i was just sayin what ya said and what my mate said. yea i also couldnt hear ya propperly over the phone because i had shit service and a bit of wind around me. will check all the lines from turbo for blockage's and might just get a new catch can to eliminate that as i issue but the one i got has a breather. also ill get onto a compresion test to see how that is. who knows could also be sparkplugs gunked up from having oil goin through there thats causing the missing. thanks heaps again for the help and ill be in contact with ya stao if all this dont work.

Edited by fat_stag
zebra Grand Master

zebra

Posted
Posted
have you done a compression test? I think you've got a busted ring land.

I am in agreeance with you there..

if you can pull the turbo off...if the exhaust manifold is full off sludge then its rebuild time. or the easier way would be to get a comp and leak-down test done.

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