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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 09-27-2019, 01:51 PM
Bubba14 Bubba14 is offline
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Mein Auto: 1993 BMW 318i
93 318i mystery vac hose

In the process of replacing the alternator on this vehicle had to move/disconnect several vac hoses. Now we have one that we can't figure out where it goes. One end of it is connected to the throttle body between the TPS and air inlet tube, the other end goes down from there to somewhere. Can't spot it with a visual, does anyone know the answer to this? M42 motor. Car idles like crap with it disconnected.
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Old 09-28-2019, 05:21 PM
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hornhospital hornhospital is offline
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Mein Auto: E24x2,E36x3,E30x2, F150
It goes to the vacuum accumulator, a black plastic cylinder about 3" in diameter. The end pointing up has a recess where the hose connects. There should be a check valve between the manifold and canister.
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Old 09-30-2019, 11:55 AM
Bubba14 Bubba14 is offline
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Mystery hose

You were correct- found the fitting. Apparently the part the hose connected to is the charcoal canister. But alas, as we were re-connecting the hose we discovered another hose that was attached to it, which is now broken at the hose connector. The canister connecter nipple is fine, but the "vent pipe" connector is toast. New vent pipe is available, but apparently will be a real pain to change. Does the vent pipe, PN 16131181018, extend to the fuel tank as a single unit or is there another connection along the way before the tank area. Or, is there some kind of connector repair kit available to repair the vent line and avoid changing it out?
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Old 09-30-2019, 02:00 PM
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hornhospital hornhospital is offline
D'oh, You Kids!
Location: In the Grumpy Chair
 
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Mein Auto: E24x2,E36x3,E30x2, F150
No repair kit that I'm aware of. You could try JB Weld, but that's dodgy on a fitting that's had fuel vapor/oil vapor through it. The vapor return hose isn't one continuous piece. Follow it back and you'll see a joint just before the tank in back.
__________________
Quotes to live by:
guessing gets expensive...drivinfaster
nothing is more expensive than a cheap BMW...c4harpe13
buying a ratty example (of a BMW) is a parasitic relationship.(and you ain't the mosquito) 7pilot
Ken Kanne, Silverhill, AL, Bimmerfest Site Moderator
BMW-CCA #441426

1993 325is M3 clone"Ashlyn"; 1993 325is "Elvira"; 1985 635CSi "Katja"; 1984 633CSi "Sylvia"; 1987 325is "Odette";1995 318is"Bebe "; 1985 325e "Hazel Ann"

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