Vaccum Lines Diagram - BMW Forum

dannyb · 06-20-2010, 09:08 PM

Anyone have a diagram of the vaccum lines? I had a shop help me with the swap and the guys just half assed everything, now i have a vaccum leak and i need to find out where the lines plug.

What connects to this nipple?

This one is connected under the throttle body and when I spray carb cleaner around it the idle goes high.

This one is on the trump like hose in the middle under the manifold, it didnt seem to react much to the carb cleaner.

I also have a square connected that is in the same loom as the MAF but its not connected. Nick thought it might be the IAT but theres a connector already connected on that.

johnnyBgood · 06-20-2010, 09:24 PM

I found this so far, Danny........still looking!

RealOEM.com BMW E36 328i AIR PUMP F VACUUM CONTROL

jb

dannyb · 06-20-2010, 09:47 PM

yeah i found that earlier today, btw its a OBDI M52 with M50 Manifold. I also have to do something with the valve cover venting, apparently it goes in the intake boot but theres only 1 hole and and theres already a hose in there.

johnnyBgood · 06-20-2010, 09:58 PM

Found this,

kcbmwclub.com • View topic - OBDI manifold swap vacuum hose question

dannyb · 06-20-2010, 10:06 PM

that explains the valve cover vent i guess. noone seems to know what that nipple is for, maybe i should try plugging the 90deg line into the nipple

johnnyBgood · 06-20-2010, 10:17 PM

Quote:

Originally Posted by dannyb

that explains the valve cover vent i guess. noone seems to know what that nipple is for, maybe i should try plugging the 90deg line into the nipple

Question Dan? Do you have the power brake vacuum booster line running into the nipple off the intake manifold?

jb

dannyb · 06-21-2010, 06:54 AM

theres nothing plugged on the nipple, should it be the line from the booster? If i remember correctly the booster is plugged on the firewall side of the manifold right after the TB.

dannyb · 06-21-2010, 12:08 PM

Looks like the bigger one, the one that reacts to carb cleaner is for the charcoal canister, that i dont have anymore. And the other one i think is for the FPR.

AlpineSixAndSeven · 06-21-2010, 12:37 PM

So does it connect to the nipple thing ?
i have to look at an obd1 car most likely I can do it later today.

dannyb · 06-21-2010, 07:13 PM

so i blocked off the big line and the car idles fine. Just need to figure out where that small unshaped line goes, it comes from the trump shaped like hose under the manifold.

dannyb · 06-21-2010, 10:16 PM

can someone tell me if this is right?

dannyb · 06-23-2010, 07:05 AM

fixed

witeshark · 06-23-2010, 09:43 AM

Cool!