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thinksound_mike

1974 02: Gas Smell in the trunk. Connect these two?

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hello.

i am a 2002 newbie. i've been lurking in the forums reading up on things and scouring the cars for sale listings for well over a year.

i finally picked up my first 02, a 1974 sahara. it's a great car but it's got a serious gas smell from the trunk. i replaced the trunk gasket the day after i got the car. i noticed in some of the previous threads that people are making their own charcoal canisters (very cool!).

my question is, do i connect these two lines?

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the clear tube is coming from the vent on filler neck. it runs through the trunk and up the wheel well but then stops. there is another line coming from the front of the car but i'm not sure where from.

or is it better to make a canister and reroute the vent line out through the trunk floor as stated in some other posts. any help would be great!

thanks!

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Here's a schematic that I found here on the FAQ, shows the system in it's entirety. I pulled off my canister a couple of months ago and connected the vent line from the gas tank directly to the intake manifold. Have not had any problems. You'll want to connect the hard plastic line to the cloth/rubber line there in the trunk, that runs to the engine compartment, then follow it up to the firewall/engine compartment, you'll want to see where/how is either connected of terminated. I don't see the vapor storage canister in the trunk (No 19 on the diagram), so as of now, your gas tank is venting in to the trunk.

You can also just vent this out the bottom of the trunk, euro style. Do a site search, it'll pop right up.

Hope that this helps.

post-21085-1366766496383_thumb.jpg

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Hi Gilbert,

I saw that diagram in another thread while I was digging around for an answer. I guess the vapor tank is missing. I wasn't sure if all year 2002s had them or if the set-up changed for 74 and those two lines were just disconnected. I've only driven the car twice. The first time was a 5.5 hour ride home from picking up the car and the smell was pretty over-powering.

I guess I could always make my own. Seems like it's worked for a lot of people on the board so far.

Thanks again!

Mike

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yes, you are missing the vapor tank. without it you are venting the gas tank into the trunk. very dangerous. no wonder you smell gas.

put tank in there or at least route the clear hose from the filler neck through a hole in the trunk floor to the outside.

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Thanks for the help!

I'd like to keep driving the car while I'm trying to locate a vapor tank. In the meantime, is it ok to cap the line coming from behind the seats (dark braided line) and then take the line from the filler neck and put it through the trunk floor?

Or would it be ok to make one like Esty did out of a thermos and some charcoal?

I don't even want to take this thing on a short trip like this.

Mike

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hi.

i just updated my profile. i'm in brooklyn, ny. my email is mike.tunney[at]thinksound.com. i also added it to my profile so i guess the email button should work now. thanks!

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I had the same smell with the vapor tank installed. I replaced it with a plastic water bottle filled with aquarium filter charcoal. I put a hose fitting on both ends of the water bottle and simply replaced the vapor tank with this contraption and it solved the problem.

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hi.

i just updated my profile. i'm in brooklyn, ny. my email is mike.tunney[at]thinksound.com. i also added it to my profile so i guess the email button should work now. thanks!

welcome mike in NY! i will try to check the parts stash tomorrow for a vapor tank.

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hi marshall,

i took your advice and ran the hose from the filler elbow out the bottom of my trunk. drove the car last night and the smell was SO much better. it helped out a lot. thanks again!

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argh. sorry, thought i had a spare vapor tank. must have given it away already.

Yes you did -- I snagged it. Mike, I'm happy to send it along to you (I ended up venting out the bottom of the trunk) email me thru the board. I no longer have the springclip thingy that holds the tank in place. should be able to fab something up though.

Dennis

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pull up the trunk floorboard on the gas tank side and check the rubber connector hose that connects the gas tank pickup with the plastic gas line. If it's cloth covered it's probably original and cracked. Replace it and clamp with small hose clamps.

Then examine the area around the pickup/gas gauge sender unit...if you see evidence of leakage, you need a new o-ring seal. Don't get this from the hardware store, as it's made with rubber that will swell on contact with gasoline, providing a better seal.

Finally, check the tank itself for rust--especially at the mid-line seam where the two halves are welded together. That's the first place they'll rust.

Happy troubleshooting

mike

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