 Where does this connect to ? |
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| porschefile2010 |
 May 6 2015, 02:00 PM
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#1
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Member  Group: Members Posts: 228 Joined: 26-May 11 From: Whangaparaoa, New Zealand Member No.: 13,118 Region Association: Australia and New Zealand  |
Hi to you all up there. I recently replaced my FI wiring loom and must have knocked this small tube off in the process and I am baffled as to where it should be going> So it's the one coming up through the bottom of the engine bay and adjacent to the water drain, below the battery. I had a feeling it might be coming from the fuel tank as some sort of vent but that seems a long way to be running a vent line.
I know someone here will know straight off where this should hook up. Thanks Richard  |
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| type47 |
May 6 2015, 02:23 PM
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#2
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
Not a factory item so anybodies guess (if you're referring to the plastic looking tube going down to the grommet in the engine shelf). Battery vent? Pressure tube for a mechanical oil pressure gauge?
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| porschefile2010 |
May 6 2015, 02:30 PM
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#3
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Member Group: Members Posts: 228 Joined: 26-May 11 From: Whangaparaoa, New Zealand Member No.: 13,118 Region Association: Australia and New Zealand |
Thanks Jim. Maybe it is do to with oil pressure. It's a very small gauge tube and quite stiff and inflexible. I'll check the other end out and see if it appears behind the centre console.
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| type47 |
May 6 2015, 04:12 PM
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#4
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
If it goes through the tin from above ( as it obviously does in the pic) look around the distributor for the oil pressure sender and see if there is provision for tapping off a fitting for the tube for a mechanical gauge. The tube under the tin might go to the center tunnel with the wiring harness. 'Course I shoulda asked first: do you have an oil pressure gauge? (IMG:style_emoticons/default/idea.gif)
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| ejm |
May 6 2015, 04:35 PM
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#5
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I can see the light at the end of the tunnel Group: Members Posts: 2,690 Joined: 3-February 03 From: Massachusetts Member No.: 224 Region Association: None |
That thin plastic tube is the vent from the fuel tank. It goes to the carbon canister which would be in the engine compartment on your '75
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| rgalla9146 |
May 6 2015, 07:17 PM
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#6
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Advanced Member Group: Members Posts: 4,550 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None 
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ejm nailed it
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| JeffBowlsby |
May 6 2015, 08:32 PM
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#7
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914 Wiring Harnesses Group: Members Posts: 8,492 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Agree. It connects to the charcoal canister...or did.
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| porschefile2010 |
May 7 2015, 03:37 AM
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#8
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Member Group: Members Posts: 228 Joined: 26-May 11 From: Whangaparaoa, New Zealand Member No.: 13,118 Region Association: Australia and New Zealand |
Thanks everyone. The emissions gear had been taken out by a PO before I brought it down from LA so I might as well get rid of it I guess. I had a feeling I had seen something about there being a vent somewhere but couldn't find any reference in my Haynes manual. Mind you I find the index in the Haynes manual a bit weird too.
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| euro911 |
May 7 2015, 04:08 AM
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#9
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,849 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California
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My '75 doesn't have a charcoal canister either … I just ran the tubing out into the r/r wheel well.
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