where does this vacuum line go?

[SirMaxximus]

Its for the breather or ventilation system for the valve cover... I hate to start a thread for this but I honestly cannot find this information anywhere. looked all over alldata and for diagrams online everywhere... the lower hose connects to the Idle Control Valve.. where does the bigger vacuum line connect? does it just need to feed into my intake somewhere, like can I tap it into the elbow. or does this engine have an oil separator or something it needs to run to? Thanks in advance

[peterz]

Runs to the throttle body elbow, check out a bmw etk if in doubt.

[gazellebeigem3]

There should be a big hose and a little hose. The big hose goes a 90 degree fitting that snaps into the throttle body boot. The little one goes #9 here: http://www.realoem.com/bmw/showparts...24&hg=11&fg=40

[SirMaxximus]

you guys are amazing! that was kinda my guess but didn't know for sure. thank you!

[mcdougal]

I thought the big hose goes to the oil dip stick drain tube? That's how I have it hooked up. Is that wrong?




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[gazellebeigem3]

Yeah. The drain tube dipstick is for when you have an oil separator installed which separates the liquid oil from the hot vapor and then returns it to the sump. The obd1 cars just loop it back into the intake to be burned.

[SirMaxximus]

Yeah. The drain tube dipstick is for when you have an oil separator installed which separates the liquid oil from the hot vapor and then returns it to the sump. The obd1 cars just loop it back into the intake to be burned.

thank you! this cleared it up a lot!