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Rb25 Blowing Heaps Of White/blue Smoke

nizmo_freek

By nizmo_freek,
in Engines & Forced Induction

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nizmo_freek Experienced

nizmo_freek

Posted
Posted

Hey guys

Big problem, drove to work today and all was fine, parked up and my car started puffing out tons of blue/white smoke, there was literally clouds of it pouring out my exhaust,the car has never smoked once since i have owned it and it is still running perfect, went to see my mechanic/engineer and see what he thought it could be, he said problally turbo, so went home and took off the exhaust dump and intake pipes, both sides are dry as, there is only a tiny bit of oil in the dump pipe, went back to my mechanic and showed him the dump pipe, he was a bit shocked to be honest, he thought it was very weird that it would all of a sudden start smoking, he suggested it could be ringlands or valve stem seals.

I will be getting a compression and leakdown test done tommorow hopefully, hopefully this will atleast give me an idea of what is happening :D

Any suggestions/thoughts on what it could be, i just blew most of my money on a hks 3037 turbo kit so am now stuck in a bit of a corner lol, any help would be great.

Cheers

nizmo_freek Experienced

nizmo_freek

Posted
  • Author
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I know that this sounds a bit rough, but if the turbo is fine, then there is nothing you can do if the ringlands are gone.

Rebuild time, and be prepared to spend over $5k.

The thing that i find weird is if it is the rings, how did they let go? the car still runs perfect and has run perfect ever since ive owned it, gets regular 4000kms oil and filter changes, hardly gets thrashed, i never hit the rev limiter the car has only done 87xxxkms etc etc, i just dont see how all of a sudden a ring/ringland can let go, my mechanic was also very suprised about it, he said it is very weird.

Angus Smart Grand Master

Angus Smart

Posted
Posted

mine still runs fine and i have similar problems.. loads of smoke from rear turbo and on backing off smoke out of pod rear filter.

first suspected turbo but now after compression and leak down test my number 6 cylinder isnt looking hot

with 0 compression and alot of leak...

:D

you could very well be in the same boat as me.

but i am happy about rebuild time! atleast now i will know whats done to my motor instead of guessing

nizmo_freek Experienced

nizmo_freek

Posted
  • Author
Posted
mine still runs fine and i have similar problems.. loads of smoke from rear turbo and on backing off smoke out of pod rear filter.

first suspected turbo but now after compression and leak down test my number 6 cylinder isnt looking hot

with 0 compression and alot of leak...

:(

you could very well be in the same boat as me.

but i am happy about rebuild time! atleast now i will know whats done to my motor instead of guessing

I would be happy about doing a rebuild , if i had the funds lol, but i just blew most of my money on the turbo kit :laugh:, was going to go for around 280rwkw on stock internals, but i guess thats not going to happen now, seems like im cursed at the moment lol.

nizmo_freek Experienced

nizmo_freek

Posted
  • Author
Posted (edited)

At the moment i am runing the stock turbo, but i have a HKS 3037 Pro S turbo kit ( theres is tons of pics in my car link) sitting in my room waiting to go on my car, looks like it will be sitting in my room for a little while longern now.

Edited by nizmo_freek
nizmo_freek Experienced

nizmo_freek

Posted
  • Author
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how do u know the stock turbo hasent gone to the gods? is it still making boost?

Yup still making plenty of boost, there is no oil in the intake pipe and the compressor wheel and exhaust wheels are dry as a bone, turbo has hardly any shaft play either.

nizmo_freek Experienced

nizmo_freek

Posted
  • Author
Posted

Just checked all the spark plugs, every spark plug is nice and clean, none of them are covered in oil, the tops of the pistons are all nice and clean from what i can see (there is a little bit of black soot ofcourse but not much)

nizmo_freek Experienced

nizmo_freek

Posted
  • Author
Posted
Check and clean your PCV valve and make sure thats working.

Had a similar problem with mine ages ago and thats what it was

The PCV valve has been removed, all the stock beather setup has been blocked up and i just have the 2 beather pipes venting into a catch can which vents via a beather filter

SABBAi Grand Master

SABBAi

Posted
Posted

Still sounds like oil seal in the turbo. My 20 turbo did the seals. You couldn't see the oil in the housing though. I threw on a 25 and the problem went away. The old turbo still boosted fine and had no shaft movement either. Do a compression test too.

nizmo_freek Experienced

nizmo_freek

Posted
  • Author
Posted

Took the car into nissan today for them to have a look, straight away they said probally the turbo, they told me to take it off and check if the oil drain was blocked at all, went home after work and got started on taking the intake piping off, straight away i noticed that the piping from the turbo to intercooler were covered in oil, took off the intake pipe and there was oil sitting on the bottom of the compressor inlet, i didnt really check that properly yesterday as i just removed the pod and had a look, so that pretty much confirms it in my mind the the turbo has shat a seal.

Have just removed the turbo and have found another problem thanks to the previous owners not running antifreeze, one of my frost/welsh plugs in the block have started to rust pretty bad and now has a pin hole leak in it, looks like im going to have to replace those before bolting on my 3037 and getting it tuned.

  • 2 weeks later...
Simon-S14 Grand Master

Simon-S14

Posted
Posted

yeah front seal let go on the old turbo.

which is why if the smoke symptoms happen, the first thing you do is pull off the cooler pipes to look for oil pooling, in some case the intercooler gets a decent coating of oil in it also.

good to hear the new turbo is on... should be an animal

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