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Author Topic: Vacuum pipes  (Read 530 times)

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Terbs

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Vacuum pipes
« on: 06 August 2026, 15:10:04 »

At the base of the bagpipes is a black box with two, what I assume are vacuum pipes/tubes.  One of these pipes runs up to a T piece. Are all three of these t piece legs supposed to have a pipe/tube connected to them. I only seem to have pipes/tubes for two.
Or, if you remember TB, when you took the bagpipes out, you did seem to query something about them, if I remember correctly :y
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TheBoy

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Re: Vacuum pipes
« Reply #1 on: 06 August 2026, 15:27:26 »

I've slept since then, so no idea.

So the pipes I disconnected, there will be 2, both heading towards back of engine.  The longer one goes down to the vac box on bottom of bagpipes, shorter one goes to the T piece halfway up the bagpipes.

Thats assuming you haven't disconnected anything else?
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Terbs

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Re: Vacuum pipes
« Reply #2 on: 06 August 2026, 15:36:26 »

Not disconnected anything else. Your reply is spot on. So, that T piece only has two pipes into it, the third leg is open then :y
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Dave_G

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Re: Vacuum pipes
« Reply #3 on: 06 August 2026, 16:03:03 »

I might be being dense here, but if a vacuum T has an open joint, surely it will be drawing air in like mad?
Unless it’s been plugged.

I was in the garage when I saw your post - don’t know your engine, but mines a (apparently crappy) 2.6. And all my vac pipes are accounted for…
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Terbs

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Re: Vacuum pipes
« Reply #4 on: 06 August 2026, 16:28:33 »

Mine is a 2003 2.6. As TB says, I have the two pipes that go to the back of the engine, one goes down to the box, the other to the 'T' piece. I can blow through it, so its not blocked off. So, where is the 'missing' pipe :-\

Good shout of yours about missing the hole in the Alternator bracket, spot on...now rectified :y
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Dave_G

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Re: Vacuum pipes
« Reply #5 on: 06 August 2026, 16:47:21 »

Just been out again to double check 

So, starting at the brake servo T connection, the long pipe goes to the reservoir.
The other pipe from the reservoir goes to one ‘side’ of a T piece.
The other ‘side’ goes to the plenum switchover valve.
The ‘upright’ leg of the T connects almost immediately into a valve whose output goes via a creamy coloured pipe to the bagpipe switchover valve.

Hope that’s of some use Terbs.
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Terbs

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Re: Vacuum pipes
« Reply #6 on: 06 August 2026, 16:51:22 »

Thanks Dave :y
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Terbs

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Re: Vacuum pipes
« Reply #7 on: 06 August 2026, 17:16:30 »

Sorted.....found the missing connection :y
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