fuel tank vaper return ??? - JeepForum.com

 
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post #1 of 8 Old 09-09-2013, 05:07 PM Thread Starter
chris989604
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fuel tank vaper return ???

What is this really?? I know it is a vent, but is it necessary with the fuel return hose.

The green hose is not connected to anything under the hood, Zero smog equipment.

Would you just cap the lines at the tank or put a loop?? OR run the lines from the tank to the valve and forget the green line to the front?

Thanks Chris



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post #2 of 8 Old 09-09-2013, 05:12 PM
skizriz
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The big can is a liquid check valve. There's a float inside that will close it off if it fills up. The small one is a rollover check valve. There's a ball inside that will close it off if flipped upside down.

The single line will go from the rollover valve to the charcoal canister in the engine compartment. That gets hooked into a vacuum source.

While not 100% necessary, it eliminates alot of fuel odors. My hose is just looped as you started, but I am planning on hooking everything up. I have all of the parts to do it, just need to make time.
I have a constant smell of gas around the Jeep, it get old after awhile.

The first step is to determine if the valves pictured actually work. The big one can be carefully opened up. It's just an O ring seal, a float inside, and thats about it. The smaller one can be visually checked, they usually rust apart, and blown through while flipping it to see if it works or not.
FWIW...neither part is readily available anymore. It takes some piecing of parts to make the setup work. If you remove them, don't toss them in the trash if they are good.
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post #3 of 8 Old 09-09-2013, 05:33 PM
walkerhoundvm
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Quote:
Originally Posted by skizriz View Post
FWIW...neither part is readily available anymore.
Aha! Not entirely true - the big one (which is usually pretty serviceable) can't be found anywhere. The smaller one - the rollover valve - can be found at delorean.com. Yes, that Delorean. http://store.delorean.com/p-6703-roll-over-valve.aspx It's an exact fit
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post #4 of 8 Old 09-09-2013, 05:36 PM
skizriz
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Quote:
Originally Posted by walkerhoundvm View Post
Aha! Not entirely true - the big one (which is usually pretty serviceable) can't be found anywhere. The smaller one - the rollover valve - can be found at delorean.com. Yes, that Delorean. http://store.delorean.com/p-6703-roll-over-valve.aspx It's an exact fit
That's what I bought. For about $30. If they even still have any left.
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post #5 of 8 Old 09-09-2013, 05:53 PM
walkerhoundvm
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Quote:
Originally Posted by skizriz View Post
That's what I bought. For about $30. If they even still have any left.
True, they have a limited supply of parts - all made for the original Delorean production run in the 80s and once they're gone, they're gone for good (unless you build your own Delorean and go back in time to buy them). The good news is they're made of plastic, unlike the original thin metal that rusts away like you mentioned. So hopefully they'll have a longer service life
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post #6 of 8 Old 09-09-2013, 06:18 PM
Texian
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Thanks,just ordered one !
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post #7 of 8 Old 09-10-2013, 04:26 AM
SJ85CJ7
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Now available on EBay,

http://www.ebay.com/itm/DMC-DeLorean...2cc567&vxp=mtr

85' CJ7, 258 I6, "Team Rush" Weber 38/MSD 6A, T-176 4-speed, twin-stick Dana 300, DANA 30 fore - AMC 20 aft with stock 2.73 gears, 31" tires, 8k winch, "Dirtworx" rear bumper/tire carrier. My Daily Drive, JustEmptyEveryPocket
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post #8 of 8 Old 09-10-2013, 04:36 AM
bdatkins
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Just be sure if you do the loop to get a vented gas cap. You dont want the pressure to build up.
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