Please Identify This Hose!
Thread Starter
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Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
Please Identify This Hose!
First off, I already have the CHILTON'S manual, and it is of no use to this situation.
I have a 1985 F-150 XLT Lariat with the 302 2-Barrel engine. It has the original (rebuilt) Motorcraft carburetor.
The orginal air cleaner was replaced with an aftermarket one by the original owner, so this might explain the following loose hose that was left laying in the left side of the engine comaprtment.
Coming from the charcoal cannister, the bottom hose goes to the fuel tanks. The TOP hose is the one I am referring to:
1. From the charcoal cannister, there is a rather thick 3/8" inside diameter hose that is 19" long that connects into a "T."
2. Connecting the RIGHT of this "T" is a 1/4" piece of hose that has been cut short, and I have no idea where it once connected to.
3. Keeping in line with orginal hose that came from the charcoal cannister and connecting to the other end of the "T" is another 3/8" hose that is 2" long. This connects to a cylinder-shaped object that is 1" x 1-1/4".
4. Connected to the RIGHT of this cylinder-shaped object is another smaller hose that has a 1/8" inside diameter that has also been cut short, and I have no idea where it once connected to.
5. Offset to the left of the cylinder-shaped plastic object, the word "CARB" is written on it with an arrow pointing UP. Another 3/8" hose is connected at this location. It is 2" long, and it is the same diameter as the original hose that came from the charcoal cannister. This obviously goes to the carburetor, but I can't seem to get the thick 3/8" hose to connect to ANYTHING on the carburetor.
Can someone please shed some light on this for me? The vacuum diagrams look like Japanese to me.
I have a 1985 F-150 XLT Lariat with the 302 2-Barrel engine. It has the original (rebuilt) Motorcraft carburetor.
The orginal air cleaner was replaced with an aftermarket one by the original owner, so this might explain the following loose hose that was left laying in the left side of the engine comaprtment.
Coming from the charcoal cannister, the bottom hose goes to the fuel tanks. The TOP hose is the one I am referring to:
1. From the charcoal cannister, there is a rather thick 3/8" inside diameter hose that is 19" long that connects into a "T."
2. Connecting the RIGHT of this "T" is a 1/4" piece of hose that has been cut short, and I have no idea where it once connected to.
3. Keeping in line with orginal hose that came from the charcoal cannister and connecting to the other end of the "T" is another 3/8" hose that is 2" long. This connects to a cylinder-shaped object that is 1" x 1-1/4".
4. Connected to the RIGHT of this cylinder-shaped object is another smaller hose that has a 1/8" inside diameter that has also been cut short, and I have no idea where it once connected to.
5. Offset to the left of the cylinder-shaped plastic object, the word "CARB" is written on it with an arrow pointing UP. Another 3/8" hose is connected at this location. It is 2" long, and it is the same diameter as the original hose that came from the charcoal cannister. This obviously goes to the carburetor, but I can't seem to get the thick 3/8" hose to connect to ANYTHING on the carburetor.
Can someone please shed some light on this for me? The vacuum diagrams look like Japanese to me.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
It's part of the evaporation system.
The end of the 3/8 hose goes to the carb bowl vent. It helps prevent gas evaporation to the atmosphere.
The 1/4 hose that tees into this went to a canister purge solinoid controled by the computer. From this solinoid it would go on to the PCV valve where it would hook up to the top port of the valve. This way when the truck is running during certain conditions the computer would purge or suck out the gas "fumes" from the charcoal canister, via the PCV valve and burn them.
The cylindical thing with CARB, written on it is a one way check valve, it only allows gas "fumes" to exit the carb and not go back into the bowl.
It's a good idea to have this system working for two reasons. One it helps prevent or limit gas evaporation, especially good since gas is $3.20 a gallon. and for two, it will keep gas fumes from accumilating underneath the hood and around the truck.
Hope this helps.
The end of the 3/8 hose goes to the carb bowl vent. It helps prevent gas evaporation to the atmosphere.
The 1/4 hose that tees into this went to a canister purge solinoid controled by the computer. From this solinoid it would go on to the PCV valve where it would hook up to the top port of the valve. This way when the truck is running during certain conditions the computer would purge or suck out the gas "fumes" from the charcoal canister, via the PCV valve and burn them.
The cylindical thing with CARB, written on it is a one way check valve, it only allows gas "fumes" to exit the carb and not go back into the bowl.
It's a good idea to have this system working for two reasons. One it helps prevent or limit gas evaporation, especially good since gas is $3.20 a gallon. and for two, it will keep gas fumes from accumilating underneath the hood and around the truck.
Hope this helps.
Thread Starter
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Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
AWESOME description, 81-F-150-Explorer. Thank you very much! You REALLY know your stuff!
Is that the prong that sticks off from the top of the carburetor, gold colored, and off to the left (passengers) side? If it is, I can't seem to get it to fit; the prong on the carburetor is so close to the surface that the thick 3/8" hose is too thick to connect to it.
Where is this "cannister purge solinoid" located? Do you have a picture of it? Does the hose that goes from this "cannister purge solinoid" to the PCV valve route to the RIGHT and BEHIND the carburetor? Your detailed description would also explain why the top port of my PCV valve is plugged!
What about the smaller hose that is attached to the RIGHT of this check valve?(perpendicular to the larger hose that goes to the carb bowl vent) Where did this attach to?
The end of the 3/8 hose goes to the carb bowl vent. It helps prevent gas evaporation to the atmosphere.
The 1/4 hose that tees into this went to a canister purge solinoid controled by the computer. From this solinoid it would go on to the PCV valve where it would hook up to the top port of the valve. This way when the truck is running during certain conditions the computer would purge or suck out the gas "fumes" from the charcoal canister, via the PCV valve and burn them.
The cylindical thing with CARB, written on it is a one way check valve, it only allows gas "fumes" to exit the carb and not go back into the bowl.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
Originally Posted by LARIAT 85
Is that the prong that sticks off from the top of the carburetor, gold colored, and off to the left (passengers) side? If it is, I can't seem to get it to fit; the prong on the carburetor is so close to the surface that the thick 3/8" hose is too thick to connect to it.
Where is this "cannister purge solinoid" located? Do you have a picture of it? Does the hose that goes from this "cannister purge solinoid" to the PCV valve route to the RIGHT and BEHIND the carburetor? Your detailed description would also explain why the top port of my PCV valve is plugged!
What about the smaller hose that is attached to the RIGHT of this check valve? (perpendicular to the larger hose that goes to the carb bowl vent) Where did this attach to?
Do you have a vacuum diagram on the truck? it should be listed in that diagram, on the emission lable where it attaches to, and what hose goes where.
The problem I'm having is mentaly picturing exactly which evaporation system you have. There are several types, and I don't want to be telling you wrongly by telling you about the wrong system.
Thread Starter
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Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
No, there are no wires coming from the check valve.
And no, I do not have a vacuum diagram either. The original owner of the truck seems to have removed it, along with the catalytic converters and the smog air pump. Two exhaust pipes were added, and only a few vacuum hoses are missing or disconnected. I would like to hook everything back up that I can, and get this truck running like it is supposed to!
I do apologize for not posting a picture. If I went and borrowed a friend's camera and took a few pictures of what I have, what would you need to see that would help you indentify which evaporation system I have? (I don't even understand what an "evaporation system" even does or means.)
81-F-150-Explorer, thank you so much for your help, you seem to really know Ford trucks! Please see my other post titled "Yellow Three-Plug Vacuum Plug" that I posted yesterday.
And no, I do not have a vacuum diagram either. The original owner of the truck seems to have removed it, along with the catalytic converters and the smog air pump. Two exhaust pipes were added, and only a few vacuum hoses are missing or disconnected. I would like to hook everything back up that I can, and get this truck running like it is supposed to!
I do apologize for not posting a picture. If I went and borrowed a friend's camera and took a few pictures of what I have, what would you need to see that would help you indentify which evaporation system I have? (I don't even understand what an "evaporation system" even does or means.)
81-F-150-Explorer, thank you so much for your help, you seem to really know Ford trucks! Please see my other post titled "Yellow Three-Plug Vacuum Plug" that I posted yesterday.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
The following should explain what the evaporation emission system does...
http://www.autozone.com/servlet/UiBr...3d800a5ac4.jsp
It's mostly designed for smog control, but it will help reduce the amount of gas vaporizing in your tank, and with gas prices the way they are, every little bit helps. IMO.
Well, I would need a picture of the carb, and the various vacuum hoses that you have.
Also a picture of the vacuum diagram would be really handy.
http://www.autozone.com may have the diagram I would need to look at.
Nothing is like actually having the truck right there to look at however.
With components missing, you may have to improvise a working evaporation system or go wrecking yard hopping.
From what you have told me so far, it seems your canaster purge solinoid is missing, (are ther any wires unplugged, either a grey or green plug with two wires, One RED and One GREEN/YELLOW stripe wire, in the connector anywhere? ) and the fuel vacuum vent/check valve needs to be hooked up correctly.
The 3/8 hose goes from the canister, to the valve, and from there to the carb bowl vent. the 1/8 vacuum hose needs to hook up to ported manifold vacuum, possibly one of the ports on the carb to operate the valve during certain conditions. This should be labled in the vacuum diagram.
hope this helps.
http://www.autozone.com/servlet/UiBr...3d800a5ac4.jsp
It's mostly designed for smog control, but it will help reduce the amount of gas vaporizing in your tank, and with gas prices the way they are, every little bit helps. IMO.
Well, I would need a picture of the carb, and the various vacuum hoses that you have.
Also a picture of the vacuum diagram would be really handy.
http://www.autozone.com may have the diagram I would need to look at.
Nothing is like actually having the truck right there to look at however.
With components missing, you may have to improvise a working evaporation system or go wrecking yard hopping.
From what you have told me so far, it seems your canaster purge solinoid is missing, (are ther any wires unplugged, either a grey or green plug with two wires, One RED and One GREEN/YELLOW stripe wire, in the connector anywhere? ) and the fuel vacuum vent/check valve needs to be hooked up correctly.
The 3/8 hose goes from the canister, to the valve, and from there to the carb bowl vent. the 1/8 vacuum hose needs to hook up to ported manifold vacuum, possibly one of the ports on the carb to operate the valve during certain conditions. This should be labled in the vacuum diagram.
hope this helps.
