missing hose
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From: East Bernstadt, Ky
missing hose
Hey guys I have an 82 f100 with a 302 auto tranny and a motorcraft carb i think its a 2100 possibly a 2150, the tag is missing and im just gussing from pics. There is a large spout/nipple on the front towards the top of the carb that looks like it should be connested to some sort of hose. It's looks to have an i.d. of about 1/4". Is this something that needs to be connected or does it need to be plugged. The smog pump and all that stuff is gone and plugged off could it go to that or what? Thanks for the help in advance.
Post Fiend
Joined: Nov 2005
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From: Charles Town, W bygod Va
I think mine was black and was on a bracket under the battery. It should have a hose to the gas tank as well then a vacuum line to a purge solenoid or something. Dont plug the vent on the carb, it would cause problems
Post Fiend
Joined: Jul 2004
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From: Northern California
The purpose of the canister is to help reduce fuel evaporation to the atmosphere.
I would put it back on, if it was mine.
The older vehicles that don't have this system smelles of gas a lot of the time. Especially if parked in the sun for long periods.
So if your truck starts smelling like raw gas, this is perhaps one reason why.
Hope the info helps.
I would put it back on, if it was mine.
The older vehicles that don't have this system smelles of gas a lot of the time. Especially if parked in the sun for long periods.
So if your truck starts smelling like raw gas, this is perhaps one reason why.
Hope the info helps.
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From: East Bernstadt, Ky
The box on mine has two holes (I think) and isnt hooked up to anything. Right now I have the bed off the truck, building a shorter narrower flatbed, the gas tank seems to have all the hoses on it but nothing is ran up front to where the canister goes. Do I need to check? I dont want anything to be sucked into a hose that is dangling somewhere.
Post Fiend
Joined: Nov 2005
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From: Charles Town, W bygod Va
My truck had a small steel line up the pass frame rail with rubber lines on each end going to the tank and the charcoal can., I see no risk of lines sucking up debris
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Post Fiend
Joined: Jul 2004
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From: Northern California
On 1982 Federal emissions. F-100.
The hose on top of the tank is the tank vent. If it gets plugged it can cause vapor lock.
There should be a metal line that runs down the passenger framerail. The hose from the tank hooks to this metal line. Then the metal line goes to the charcoal canister where another hose hooks to the canister.
The other port on the canister, the larger one, goes to the carb vent, via a rubber hose and between the carb vent and the canister there is a one way check valve at the carb.
There is also a T fitting between the check valve and the canister, and another hose goes to a vacuum motor (purge valve), and from that to the pcv valve small nipple.
The vacuum motor has another fitting that connects it to ported vacuum, so the truck can burn all the unused vapors in the canister at the right time.
This is a basic system, and other systems are different, and some more complex. (IE: California)
The hose on top of the tank is the tank vent. If it gets plugged it can cause vapor lock.
There should be a metal line that runs down the passenger framerail. The hose from the tank hooks to this metal line. Then the metal line goes to the charcoal canister where another hose hooks to the canister.
The other port on the canister, the larger one, goes to the carb vent, via a rubber hose and between the carb vent and the canister there is a one way check valve at the carb.
There is also a T fitting between the check valve and the canister, and another hose goes to a vacuum motor (purge valve), and from that to the pcv valve small nipple.
The vacuum motor has another fitting that connects it to ported vacuum, so the truck can burn all the unused vapors in the canister at the right time.
This is a basic system, and other systems are different, and some more complex. (IE: California)
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Post Fiend
Joined: Jul 2004
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From: Northern California
Not so much sucking it up, as dust and dirt getting into it and plugging them.
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From: East Bernstadt, Ky
I live in the graet state of Kentucky and they let us drive anything with a licence plate and insurance so I'm not really worried about emmisions so would it be ok just to hook up the vent hose from the tank so it don't get plugged and leave the carb hose off?
Post Fiend
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From: Northern California
You still might get fuel vapor smell under the hood when the carb vents, but it won't really hurt anything.
If you want to remove the canister. You can buy vented gas caps, the ones that are used "without evaporative emissions". and remove the hose on the top of the gas tank altogether.
But you may smell gas around the truck when it vents.
But it's up to you what you want to do.
Personally I wouldn't remove it and get it working for two reasons, because not only does it keep the evaporated gas out of the atmosphere, (which isn't one of the two reasons b.t.w.) (1) it also helps to keep the fuel in the tank and (2) help keep the truck from smelling of gas as well. And with fuel prices like they were, etc...
Just like there are simular benefits to the PCV system other than emission related.
If you want to remove the canister. You can buy vented gas caps, the ones that are used "without evaporative emissions". and remove the hose on the top of the gas tank altogether.
But you may smell gas around the truck when it vents.
But it's up to you what you want to do.
Personally I wouldn't remove it and get it working for two reasons, because not only does it keep the evaporated gas out of the atmosphere, (which isn't one of the two reasons b.t.w.) (1) it also helps to keep the fuel in the tank and (2) help keep the truck from smelling of gas as well. And with fuel prices like they were, etc...
Just like there are simular benefits to the PCV system other than emission related.
Post Fiend
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From: Charles Town, W bygod Va
My tank vents were leaky and the edelbrock carb just vents into the air horn. I'm all about saving the planet but with whats puking out my tailpipe I dont think the evap emissions are significant