Name the pipe... online pop quiz!

[eddie124]

Hehehe... sorry about that, I've been awake for too long so starting to go a touch silly...

I've been working on my wiring lately and just a while ago I found a small pipe hiding behind the brake pedal, just hanging there... as I twigged it, I realised it was a thin vacuum (presumably!) line connecting to a valve plugged onto the plenum... can anyone explain what this does and where it's supposed to go?



This is on an '89 Touring 320i that's had a very early (~85/86) 325i engine transplant (including all engine stuff like AFM, intake, etc)... currently minus all wiring as I'm waiting on a full facelift engine harness to convert to the later Motronic version.

Thanks in advance for your help.

Cheers, Eddie

[daimlerman]

Ah well,at least we are converting you from that
Fix
It
Again
Tomorrow
wrongness! At a guess,your vacuum pipe conects to a carbon canister,but why one should be present on an early engine is a mystery to me.

[eddie124]

Sorry mate,

No-one can ever persuade me away from that Fabulous Italian Artistry and Technology, for no money, cars, women or what-have-you. I do love my Touring, but in a totally different manner to my classic Fiats. Mind you, I don't have much feelings for the late-70's onwards output of theirs, my general rule of thumb is that anything with a name instead of a number from 75-onwards is rubbish.

You could get a 125 or an early 132 and they would give an '02 or an E21 a run for their money, with similar engines. I once bombed down the A1 here in Portugal with a totally stock 125 and someone in a (then-new) E36 318 tried in vain to keep up... and the 125 is a 1.6, and mine wasn't even the Special (100 bhp), it was the bog standard 90 bhp version.

Anyways, I digress. I see I failed to mention the engine came off a US car, so maybe that makes sense with all their emissions rubbish. So if I can do without that, what can I remove that's not needed for the Euro version?

Cheers, Eddie

[weed1]

Possible targets for the loose pipe
1,throttle body.
2, Fuel pressure regulator.
3, somewhere on the intake manifold.

m