 What is this tube for?, Is this ok not connected? |
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| oakdalecurtis |
 Aug 28 2016, 03:53 PM
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#1
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Oakdalecurtis  Group: Members Posts: 1,323 Joined: 5-June 15 From: Oakdale, Ca Member No.: 18,802 Region Association: Central California 
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'76 2.0 engine, there is a metal tube projecting out from the driver's side tin in front of #2 cylinder. It looks like an air outlet for some purpose. Does anyone know what it's for?
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Replies(1 - 12)
| TheCabinetmaker |
Aug 28 2016, 05:21 PM
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#2
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Fuel vapor vent system
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| oakdalecurtis |
Aug 28 2016, 06:11 PM
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#3
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Oakdalecurtis Group: Members Posts: 1,323 Joined: 5-June 15 From: Oakdale, Ca Member No.: 18,802 Region Association: Central California
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QUOTE(The Cabinetmaker @ Aug 28 2016, 04:21 PM)  Fuel vapor vent system Thanks Cabinet, should something be hooked up to it? Going where if so? |
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| r_towle |
Aug 28 2016, 06:23 PM
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#4
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Custom Member Group: Members Posts: 24,569 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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There are two hoses coming from the charcoal canister on top of the fuel tank.
They come down the drivers side outer long and up into the engine bay, drivers side near the firewall. From there they change to fiber wrapped hoses, one of which plugs into the fan to push air into the tank, the other connects to the air cleaner to suck in the vapors. |
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| oakdalecurtis |
Aug 28 2016, 06:50 PM
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#5
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Oakdalecurtis Group: Members Posts: 1,323 Joined: 5-June 15 From: Oakdale, Ca Member No.: 18,802 Region Association: Central California
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QUOTE(r_towle @ Aug 28 2016, 05:23 PM) There are two hoses coming from the charcoal canister on top of the fuel tank. They come down the drivers side outer long and up into the engine bay, drivers side near the firewall. From there they change to fiber wrapped hoses, one of which plugs into the fan to push air into the tank, the other connects to the air cleaner to suck in the vapors. I only have one big tube coming off my gas tank vapor canister, no other connection on it not being used. Could that be why there is no tube connected to the pipe on the engine bay tin?  |
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| TheCabinetmaker |
Aug 28 2016, 07:09 PM
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#6
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
They weren't used in mid year 74 and later.
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| Mike Bellis |
Aug 28 2016, 07:10 PM
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#7
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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| oakdalecurtis |
Aug 28 2016, 07:45 PM
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#8
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Oakdalecurtis Group: Members Posts: 1,323 Joined: 5-June 15 From: Oakdale, Ca Member No.: 18,802 Region Association: Central California
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QUOTE(The Cabinetmaker @ Aug 28 2016, 06:09 PM) They weren't used in mid year 74 and later. Thank you, that explains nothing attached to that pipe fitting, and thats how it should be. |
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| JeffBowlsby |
Aug 28 2016, 07:56 PM
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#9
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914 Wiring Harnesses Group: Members Posts: 8,485 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Lots of misinformation in this thread. See this diagram for what that port attaches to.
Attached image(s) 
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| ClayPerrine |
Aug 28 2016, 07:58 PM
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#10
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Life's been good to me so far..... Group: Admin Posts: 15,416 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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The 75/76 914 moved the charcoal canister to the engine compartment. There should be a plastic line that runs from the fuel overflow tank in the front trunk all the way back to the engine compartment. It terminates by the battery. The charcoal canister is mounted to the battery hold down bolt with the end with the small line facing forward. The big line on the front end goes to the fan shroud (the empty fitting you see) and the rear fitting goes to the air cleaner. When the car is running, the air blowing through the charcoal canister pulls the vapor out and sends it into the air cleaner to be burned in the engine.
Hook it back up. The weight is negligible, it does not rob any horsepower, and it both keeps the gas smell down and helps the environment. |
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| oakdalecurtis |
Aug 28 2016, 08:17 PM
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#11
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Oakdalecurtis Group: Members Posts: 1,323 Joined: 5-June 15 From: Oakdale, Ca Member No.: 18,802 Region Association: Central California
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QUOTE(ClayPerrine @ Aug 28 2016, 06:58 PM) The 75/76 914 moved the charcoal canister to the engine compartment. There should be a plastic line that runs from the fuel overflow tank in the front trunk all the way back to the engine compartment. It terminates by the battery. The charcoal canister is mounted to the battery hold down bolt with the end with the small line facing forward. The big line on the front end goes to the fan shroud (the empty fitting you see) and the rear fitting goes to the air cleaner. When the car is running, the air blowing through the charcoal canister pulls the vapor out and sends it into the air cleaner to be burned in the engine. Hook it back up. The weight is negligible, it does not rob any horsepower, and it both keeps the gas smell down and helps the environment. My charcoal canister is like you said, hooked to the battery hold down. The big rubber tube next to the firewall goes to the fan shroud right next to it below. The big tube on the other end (back of car side) goes to the air cleaner. The short metal tube not hooked up to anything that I'm concerned about is on the driver's side, but post above said 76 did not use it.  |
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| sjhenry1075 |
Aug 29 2016, 06:32 AM
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#12
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Member Group: Members Posts: 266 Joined: 22-July 12 From: Stevensville, MD Member No.: 14,709 Region Association: North East States
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QUOTE(Mike Bellis @ Aug 28 2016, 09:10 PM) Would you happen to have the same diagram but for a 71 1.7? Semper Fi! |
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| JeffBowlsby |
Aug 29 2016, 10:29 AM
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#13
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914 Wiring Harnesses Group: Members Posts: 8,485 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Attached image(s) 
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