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Bubbagenerring help indentifing what it is

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Old Jul 15, 2019 | 11:41 AM
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Default Bubbagenerring help indentifing what it is

So I did finally get my vette and am loving it despite all the work it needs. While under the hood I stumbled across a hose I had missed before that was just dangling with a large screw corking off the end of it. I imagine it was effective for whatever purpose it has. Whatever purpose the screw has I'm pretty sure it's not factory.

I tracked the hose down to some Y connector and to something that I'm not sure what it is yet with what looks like a Black cap.

So what I'm trying to figure out is what that container is, what the screw may have been placed there for, and what if anything I should do with this.

This is a 1978 Base Model. I think it's mostly unmodified, but this happens to be an exception.


Bubba screw.

Trying to get a photo of the Y connector

The hose seems to connect to some Y connector that connects to that black cap.

Last edited by Alma; Jul 15, 2019 at 01:05 PM. Reason: Adding car year
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Old Jul 15, 2019 | 12:09 PM
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You didn't say what year but I suspect it is disconnected smog equipment.
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Old Jul 15, 2019 | 12:11 PM
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Model year? Based on the pics, it looks like you're working with the fuel vapor canister.
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Old Jul 15, 2019 | 12:33 PM
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Thanks yes I realized later I should have posted the year. It's a 1978 base model not the pace car model.
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Old Jul 15, 2019 | 01:41 PM
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This is what the top of the 1978 fuel vapor canister looks like. Google 1978 corvette vacuum line and you will see some images for the routing of the lines.

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Old Jul 15, 2019 | 02:43 PM
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Thanks, that is the canister in question. As I recall the hose in question is connected eventually through that Y connector to the fuel tank line. I couldn't find any place where the hose in question would connect to. Thanks this all helps a lot in answering my question and trying to figure out what is going on with that hose.
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Old Jul 15, 2019 | 03:45 PM
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Originally Posted by Alma
...to figure out what is going on with that hose...
The assembly instruction manual (AIM) could help you. It shows the canister installation and the hose routing. Order the 78 AIM.
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Old Jul 15, 2019 | 08:44 PM
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Looks like someone got up on the wrong side of the bed today.
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Old Jul 15, 2019 | 10:24 PM
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Alma, please continue to ask questions in your thread and throughout the site without regard for the unfortunate response you received, which was removed.

If you receive a similarly inappropriate response to a question here or anywhere, please click the “Report Post” icon and it will be addressed. The forum welcomes all types of questions in the discussion areas. Best of luck with your car.
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Old Jul 16, 2019 | 08:21 AM
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You may be able to find a vacuum system diagram specific to your car/engine on the internet. My Google skills are lacking this morning.

Your best bet is the Shop Manual for 1978 Corvettes, available from the vendors, and even Rock Auto. Another good bet is to read the Forum posts on the specific systems, and decide for yourself what you do and do not need to leave connected under the hood. The fuel vapor canister is one system I would absolutely recommend you keep functional. Are you looking for a 100% factory original appearance, or just something that works and looks clean?

Good luck with your car, and please post more photos!
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Old Jul 16, 2019 | 09:04 AM
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You can get some good deals on manuals from Ebay. The service manual on the left is what you want but he is throwing in the other. : https://www.ebay.com/itm/1978-Chevro...IAAOSwGJ5cz7RR

The AIM is specific to a 78 Corvette and shows how the car was put together in more detail than the above manuals. Willcox has it here, just specify the year: https://willcoxcorvette.com/corvette...cd-format-2530

If you are going to keep the car, well worth the small investment.
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