Help me find vacuum hose diagram

The Middle intake tube has F piping on it.
The top hose is good, but bottom is disconnected. From the looks of it, it goes toward dipstick tube area. Where does this hose go?

_________ (connected)
l
l
l________ (disconnected). where does this hose lead to? it seems like it's going near the dipstick tube area.
l
l
l

off the top of my head and with no background information search, i am fairly certain that one of those hoses goes to the fuel filter...

I can't see this image; I'm at work . . . If this isn't it, look through these: http://bmwfans.info/parts/catalog/E4...browse/engine/

when i was removing that piece from the intake boot i broke it and had to order a new one. dont have the P/N on hand but the parts guy at the dealer said it was called an F valve or something like that

Originally Posted by CaptainTrap

when i was removing that piece from the intake boot i broke it and had to order a new one. dont have the P/N on hand but the parts guy at the dealer said it was called an F valve or something like that

I didn't break the F thing. But the hose attached to it is broken and i can't attach it back to the F-tube b/c hoses are brittle.

I think that would be number 6 in the diagram. Mine broke too. http://bmwfans.info/parts/catalog/E4...ontrol_engine/

it cant be No. 6 because this piece is actually shaped just like an upper case F.

I just thought if you knew the p/n of the F tube it would help you track down the vacuums associated with it.

here's the picture of "F" vent tube

yeah almost positive that little lower hose goes to the fuel filter. dont take my word for it tho, see for your self. (isnt that what the reading rainbow guy used to say? haha)

I am thinking vapors from the fuel filter gets released into the throttle body? Interesting design. anyone knows the size of this hose?

the rubber part is general sized vacuum hose the size is standardized so if you ask for "vacuum hose" it will be a direct replacement. However, the rubber vacuum hose accepts a smaller diameter plastic line that (i think) leads from the fuel filter.

Im sure that the fuel filter vapors do not enter the intake manifold as this air would have contaminants and enters the intake boot after the air filter, it would also be highly combustible, but the line could create a suction created by the intake system within the fuel filter to help deliver fuel to the fuel rail Possible alleviate stress on the fuel pump?

Originally Posted by CaptainTrap

the rubber part is general sized vacuum hose the size is standardized so if you ask for "vacuum hose" it will be a direct replacement. However, the rubber vacuum hose accepts a smaller diameter plastic line that (i think) leads from the fuel filter.

Im sure that the fuel filter vapors do not enter the intake manifold as this air would have contaminants and enters the intake boot after the air filter, it would also be highly combustible, but the line could create a suction created by the intake system within the fuel filter to help deliver fuel to the fuel rail Possible alleviate stress on the fuel pump?

interesting theory. These cars have too many unnessary stuff that goes bad.. like power steering cooling lines, vacuum assisted fuel pump, elaborate oil separator system.

why why why would you design stupidity in these cars BMW..

http://www.realoem.com/bmw/partgrp.d...25&hg=13&fg=15

i have an unrelated question in one of the diagrams you posted smolck. in the valves/pipes of fuel injection system diagram is bolt number 7 the one of four bolts that fasten the fuel rail to the manifold? I lost one of them while removing the fuel rail and need to order another one from tischer. thanks

Originally Posted by CaptainTrap

i have an unrelated question in one of the diagrams you posted smolck. in the valves/pipes of fuel injection system diagram is bolt number 7 the one of four bolts that fasten the fuel rail to the manifold? I lost one of them while removing the fuel rail and need to order another one from tischer. thanks

I am going to say yes.