Intake Pipe Oil Leaking

[skins]

I have a R33 which is pretty much stock. It runs the standard turbo with the standard intake piping. I've noticed that it is leaking oil from the location indicated with my awesome arrow. Can someone tell me why it would be leaking oil from there please?

[skins]

Picture shown is not of my engine bay but shows the pipe in question.

[vetter2769]

probably best to throw up a photo of your engine bay mate because its very hard to diagnose the problem when its not actually your car, this way we can see how you've plumbed back hoses and oil breather pipes and stuff like that.

The photo you put up shows the oil breather hose being plumed into the plenum which I wouldn't recommend based on personal experience where that can cause blow by pressure in the crank case. or perhaps negative pressure or some shit like that, yeah just throw up a pic of your engine bay.

Cheers - Dan

[MrStabby]

I dont know RB25s but its probably crankcase blowby fumes carrying oil mist into the intake where it can condense (which is normal unless its excessive). Is the leak point downstream from the turbo? If so you'll probably have a small boost leak. Try to get it to seal. The factory hose clamps are only supposed to be single use, and get pretty tired if they've been used a few times - might need to replace it to get a strong grip. Or maybe the rubber is perished a bit.

[skins]

Thats my engine and all the pipe work and hoses are all hooked up to the factory places.

The second pic is the pipe in question where the oil is leaking. I think its the one that goes down the smic?

[MrStabby]

Any blue smoke from the exhaust? If so it could be turbo oil seal, otherwise just a bit of condensed blowby. In the second pic the bottom black hose is probably turbo to intercooler and the top is intercooler to manifold. You could check your intercooler to see how much oil its got isn it and degrease/clean it while its out. If the amount of oil in the intake track is a problem and its blowby related, you could get a catch can, or some mesh/foam in the rocker covers (not sure if this is a thing on RB25s, RB26 has mesh standard, and you can get 3 pass foam upgrades).

[vetter2769]

what he said ^ either get a new hose to stop the leak... or get a catch can if your running a bit of boost, it can cause blow-by which forces oil into your turbo, I personally don't like the idea, and I usually use some sort of catch can thing.

- Dan

[skins]

Yes there is smoke from the exhaust and it does use a bit of oil too.

[vetter2769]

white smoke? does it have like a.. sweet taste/smell to it?

[skins]

Not sure of the smell / taste but yeah white smoke.

[vetter2769]

yeah so could oil burning, so go get it checked out?

[skins]

That's the plan just wanted to ask so I could narrow it down

[skins]

Wtf?