Does it matter if I do this?
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Does it matter if I do this?
I reinstalled both gas tanks, but I have some questions about them. On the tanks, there are the air vents, there is two ports. One of the vents is suppose to go to the charcoal box, the other is just a breather. I forget which is which, do you think it matters what vent I connect the air vent line to the charcoal box?
My next question is, is do you guys know that o-ring gasket that go under the lock ring for the fuel pump? Well I lost one, and I didnt use one. Do you think I should put some sort of caulking in place of it to re-create gasket for it.
My next question is, is do you guys know that o-ring gasket that go under the lock ring for the fuel pump? Well I lost one, and I didnt use one. Do you think I should put some sort of caulking in place of it to re-create gasket for it.
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From: Mattawa Washington.
I reinstalled both gas tanks, but I have some questions about them. On the tanks, there are the air vents, there is two ports. One of the vents is suppose to go to the charcoal box, the other is just a breather. I forget which is which, do you think it matters what vent I connect the air vent line to the charcoal box?
My next question is, is do you guys know that o-ring gasket that go under the lock ring for the fuel pump? Well I lost one, and I didnt use one. Do you think I should put some sort of caulking in place of it to re-create gasket for it.
My next question is, is do you guys know that o-ring gasket that go under the lock ring for the fuel pump? Well I lost one, and I didnt use one. Do you think I should put some sort of caulking in place of it to re-create gasket for it.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
There are no vents in the top of the tank.
If you are talking about the "T" connection on the vapor hose a short way from the front tank the other hose goes to the rear tank.
Yes you need the "O" rings.
Image of the "T" in the photo:
http://i54.photobucket.com/albums/g9.../FrontTank.jpg
/
If you are talking about the "T" connection on the vapor hose a short way from the front tank the other hose goes to the rear tank.
Yes you need the "O" rings.
Image of the "T" in the photo:
http://i54.photobucket.com/albums/g9.../FrontTank.jpg
/
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Posting Guru
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There are no vents in the top of the tank.
If you are talking about the "T" connection on the vapor hose a short way from the front tank the other hose goes to the rear tank.
Yes you need the "O" rings.
Image of the "T" in the photo:
http://i54.photobucket.com/albums/g9.../FrontTank.jpg
/
If you are talking about the "T" connection on the vapor hose a short way from the front tank the other hose goes to the rear tank.
Yes you need the "O" rings.
Image of the "T" in the photo:
http://i54.photobucket.com/albums/g9.../FrontTank.jpg
/
Thank you. But there are vapor vents on top of both tanks. The "T" connection u r referring to connects a line that goes to the vents. Here are pictures.
Middle Tank Vent
Rear Tank Vent:
Fleet Owner
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From: Easton,Ks
That is not a vent.
That is the vapor valve and all hoses from the vapor valves go to the charcoal canister and then to the throttle body.
In very old trucks they had a vented gas cap but that is a no no now and that was the only vent they ever had.
That is the vapor valve and all hoses from the vapor valves go to the charcoal canister and then to the throttle body.
In very old trucks they had a vented gas cap but that is a no no now and that was the only vent they ever had.
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Okayyy, but you must of known what I was referring to; valve-vent..In any event, one of the ports does not go to the charcoal box. It has its own separate 2 foot hose with a breather on it, I just didnt know if it mattered which port it went on..
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From: Los Alamos
If I am not mistaken, the fresh air side you refer to is so when the system purges the fuel vapors from the lines, it can draw fresh air through, instead of drawing off the tank unless the pressure in the tank is greater than the atmospheric pressure outside, then it will draw the vapor from the tank via the canister purge. I also believe that since these are sealed systems (so they don't release vapors to the atmosphere) that line also serves as a one way breather to allow air into the tank to compensate for fuel use....in other words, you take fuel out, you have to allow air in, or you would create a vacuum, but you can't let vapors out when the fuel vaporizes, so it only allows the vapors to run to the canister, to be purged when you start the truck...
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Thats very useful information. I didnt think of that. But basically its important I make sure these are plugged in right, otherwise when the solenoid in the charcoal box goes to draw air out of the tanks, it might not be able to if its hooked up wrong. Thank you.
Fleet Owner
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From: Easton,Ks
The Ford Shop Manuals calls that other hose (line):
Tube Assembly, Fuel Tank Auxiliary Drain
I do not know what a Fuel Tank Auxiliary Drain is unless it is for a fuel supply to a Aux Gen or other unit.
The fuel caps (gas caps) have a one way check valve to let air in when the fuel is used.
Tube Assembly, Fuel Tank Auxiliary Drain
I do not know what a Fuel Tank Auxiliary Drain is unless it is for a fuel supply to a Aux Gen or other unit.
The fuel caps (gas caps) have a one way check valve to let air in when the fuel is used.
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From: Los Alamos
K ... finally got to my books...
sorry about the scan quality...but it shows the direction you need...
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