How does m50 NV vent system work?

[damastah]

Can someone explain what I'm looking at exactly?

Where does #4 and #5 go to exactly? I have some ideas but wouldn't hurt to ask the internet.




I think this is where the exhaust gasses that pass the piston rings comes out from, but I'm not 100% too sure.

[Bmwdayz]

#4 plugs into the first hole on the intake boot. #5 goes under the intake manifold on the plug for the ICV. Hope that helps

[damastah]

#4 plugs into the first hole on the intake boot. #5 goes under the intake manifold on the plug for the ICV. Hope that helps

Thank you so much

[5Toes]

no the ICV doesnt have a vacuum line like that.

the small 3.5mm vac line off that valve goes to a nipple under the intake manifold, or on the throttle body, IIRC.

#1 loves to break, I would get a new one from BMW if yours is old, and for the #3 hose I used clear silicon tubing so I could see the blow by, available off eBay

[f4tj0n]

no the ICV doesnt have a vacuum line like that.

the small 3.5mm vac line off that valve goes to a nipple under the intake manifold, or on the throttle body, IIRC.

#1 loves to break, I would get a new one from BMW if yours is old, and for the #3 hose I used clear silicon tubing so I could see the blow by, available off eBay

The ICV clip that goes into the manifold has a nipple on the side for the smaller hose. The nipple on the actual manifold I attached to the vacuum on the fuel rail.