Crankcase ventilation hose on intake

[thick garden]

Hey,

I got a little hose running from my intake tubing to the crankcase(?)

Can I just leave it as is, or do I need to hook it back up into my new intake hoses.

Going from airbox with resonator to an open air filter

Manual says it's some kind of vacuum line?

[blazing pumice]

You're fine

I don't believe it's a vacuum line. The only reason it is connected to your intake is so that

1. Air exiting doesn't smell bad (goes through your combustion system and out the exhaust)
2. Air entering doesn't contain foreign particles

If you have a newer car or a less reliable car (bmw, kia...) I would connect it back / put a breather on it. But it's not a pressing issue.

But if you have an old reliable car it doesn't matter.

Speaking of which, I've been wanting to fix mine with ductape for the last year

[thick garden]

it's a 2005 Kia Picanto

I guess wrapping a sock/pantyhose around it would be enough for filtration

[red flare]

Basically it’s just a crankcase ventilation hose

And it’s wrapped back into the intake due to EPA or whatever environmental laws you have

Your fine to vent it back to atmosphere

[thick garden]

thank you

[low root]

I would connect it since it looks like two lines are using that as the rconnection. Regardless just because some cars are ok with the crank case being vented to atmosphere does not mean it's a great idea.

[blazing pumice]

it's a pain in the ass to reconnect on some cars and you often need to buy a new hose - but I do agree with this.

@thick garden you can reconnect it with some ductape. Just make sure that if you use ductape you cover the sticky parts so it doesn't collapse and stick together blocking the air flow.

Alternatively you can buy the parts required to fix for like $20

[thick garden]

Eughh, gonna have to drill holes and such in my intake pipe

[thick garden]

Just one line, it goes straight to the crankcase

Crank case has two lines, one goes to the intake manifold, the other one before the throttle body but after the filter