Pipe from throttle body

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Foe
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Sun May 12, 2019 4:03 pm

So there is a pipe 'dangaling' from the throttle body. Any idea where this goes?
1991 316i.

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Cloggy Saint
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Sun May 12, 2019 7:09 pm

Without having a picture I would assume it's part of the emissions control. If the car had a cat' the pipe would connect to a charcoal canister that bolts to the inner wing. Is the end of the pipe blocked off?
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Foe
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Sun May 12, 2019 9:47 pm

The end of the pipe is blocked off. And thanks for the reply :thumb:
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paultv
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Mon May 13, 2019 9:24 am

I reckon it's one of the vacuum advance retard pipe connectors for the distributor fitted to a few very early models - it has a short blanking tube ( rubber, which rots out and lets in air ) attached on all other models,

The short metal pipe drops from under the mounting flange of the throttle body and should have a stubby rubber blanking tube push fitted on.

If you look behind your alternator you'll see the blanked off fitting point for the not needed mechanical distributor on the side of the block.

I think there were two advance/retard pipes fitted to these very early cars but I'm sure Brian will show up and clarify this and all the rest if I'm wrong!

Paul :-)
4th May 1990 325i Convertible.

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Cloggy Saint
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Mon May 13, 2019 10:17 am

paultv wrote:
Mon May 13, 2019 9:24 am
I reckon it's one of the vacuum advance retard pipe connectors for the distributor fitted to a few very early models

On a '91 car?
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paultv
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Mon May 13, 2019 10:50 am

No, I meant an early 80's car, but obviously no longer used, therefore the dummy block off.

but I'm probably mistaken anyway...

Paul :-)
4th May 1990 325i Convertible.

BMW E30 Cabriolet Best Mod Ever:

http://bmwe30cabriolet-wdm.blogspot.de/
Foe
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Mon May 13, 2019 1:03 pm

Thanks for your help gents.
It doesn't seem to affect the running, just annoying that there's this pipe, going no where!
Cloggy Saint
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Mon May 13, 2019 1:19 pm

Remove the pipe and block off the stub on the throttle body.
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Foe
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Mon May 13, 2019 4:12 pm

Will do and thanks both :thumb:
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paultv
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Wed May 15, 2019 10:48 am

4th May 1990 325i Convertible.

BMW E30 Cabriolet Best Mod Ever:

http://bmwe30cabriolet-wdm.blogspot.de/
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