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Unread 06-24-2013, 01:14 PM   #1
rickscj7boom
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84 CJ7 CARB VENT / FUEL Filter question?

I'm changing out the fuel filter that the PO installed with the correct filter that it needs, so with that said I know that the top fuel filter outlet is the return to the gas tank right? So I was looking for any fuel line that goes back to the tank and the only one I found going back is connected to the top of my carb , here is a link of a fellow jeep brother labeled it with a number 7, do you guys think I can use that line and just cap the one from the carb ..

http://www.flickr.com/photos/7605628...h/2910870730/#

or try this

http://www.flickr.com/photos/7605628@N05/2910870730/

labeled #7

I will post pics of mine when I get out of work...

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Unread 06-24-2013, 02:11 PM   #2
LeePrather
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If you have 2 lines coming out of your gas tank, the larger is your fuel, the smaller is your return line. If you do have 2, follow them under the vehicle to the engine compartment. No telling what someone did to stop or plug the return line. Should have one from fuel tank to bottom line of filter to fuel pump to carb. Should have one from tank to top line of filter.
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Unread 06-25-2013, 09:45 AM   #3
rickscj7boom
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I checked the line that is connected to the top of my carb and blew on it and i could here some noise in the gas tank, so that tells me that it's connected to the tank right? Now can i connect my fuel filter over flow to that line?
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Unread 06-25-2013, 10:00 AM   #4
LumpyGrits
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Connected to you carb?
That's the feed line to your carb
Why would you connect a return line to your feed line?
You really need to get an FSM.......
LG
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Unread 06-25-2013, 10:00 AM   #5
John Strenk
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Quote:
Originally Posted by rickscj7boom View Post
I checked the line that is connected to the top of my carb and blew on it and i could here some noise in the gas tank, so that tells me that it's connected to the tank right? Now can i connect my fuel filter over flow to that line?
No vents on the carb should be connected to the tank.

But maybe the PO wanted to hook up an open port someplace...

Should be a tube going down the side of the block near the motor mount.


something like this...



just to the left of the spring.
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Unread 06-25-2013, 10:23 AM   #6
rickscj7boom
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Oh crap!, yup there is a line that is connected from the top of my carb bowl and it goes to the tank , its the number 7 on the link above...
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Unread 06-25-2013, 10:27 AM   #7
86cj74.2L
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Quote:
Originally Posted by rickscj7boom
Oh crap!, yup there is a line that is connected from the top of my carb bowl and it goes to the tank , its the number 7 on the link above...
That's your return line. The bowl vent should go to the evap canister.
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Unread 06-25-2013, 10:28 AM   #8
rickscj7boom
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Quote:
Originally Posted by John Strenk View Post
No vents on the carb should be connected to the tank.

But maybe the PO wanted to hook up an open port someplace...

Should be a tube going down the side of the block near the motor mount.


something like this...



just to the left of the spring.
thanks john, i'm guessing that fuel line tube one your picture is the one that the PO used and just connect that carb vent to it, it's just lower than how your picture looks, maybe it got bent down or cut short.. that's probably my line for the fuel filter overflow?
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Unread 06-25-2013, 12:34 PM   #9
John Strenk
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Yeah, mine sits lower also. There is just a single clamp holding it to the block.

If you look lower you should see it hooked up to another rubber hose into a line that goes to the back of the jeep.

That port was originally used as a fresh air sourse for the exhaust heated choke. It should be plugged if not used. What choke do you have?

Waiting for your pictures.... if you can post them....
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Unread 06-25-2013, 07:39 PM   #10
rickscj7boom
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Quote:
Originally Posted by John Strenk View Post
Yeah, mine sits lower also. There is just a single clamp holding it to the block.

If you look lower you should see it hooked up to another rubber hose into a line that goes to the back of the jeep.

That port was originally used as a fresh air sourse for the exhaust heated choke. It should be plugged if not used. What choke do you have?

Waiting for your pictures.... if you can post them....
Hello,

Here are a few pics on one of them i'm hold on to the line and a link to a vid...
YouTube (Short URL)
?start=" frameborder="0" allowfullscreen>


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Unread 06-26-2013, 03:01 AM   #11
John Strenk
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Yeah, that looks like the fuel return line alright.
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Unread 06-26-2013, 08:36 AM   #12
rickscj7boom
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Quote:
Originally Posted by John Strenk View Post
Yeah, that looks like the fuel return line alright.
thank you for your help sir... I will install my new fuel filter after work and see what happens
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Unread 06-26-2013, 09:07 AM   #13
John Strenk
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Just make sure it's intact all the way to the tank....
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