Which is better? Charcoal canister or extended vent line for gas smell?

Doesn't look like it would cost too much 

http://www.ebay.com/sch/i.html...nnister&_sacat=0

FWIW, mine smells too, but I have a detached garage.  My wife complains, but I couldn't care less.

The smell just reminds me of what a SWEET car I (we all) have!!!

Tub4stu, I couldn't agree with you more !

 

Just don't light up before opening the garage door

Extending the vent line will not lessen the smell.

I thought I read on these forums that one possible solution was to extend the vent line and create a loop in it somewhere along the way.  No?

justinh is correct. I had an extended vent line added to my car, mostly to get the overflow away from the car, but it did nothing to eliminate the smell during or after spirited driving or an accidental fill to the neck of the tank. 

Ah, so charcoal canister is the way to go then?  Anyone on here done it?  If so where did you mount the canister?

I doubt you will be able to mount a canister in the trunk.  It could be mounted under the gas tank, on the passenger side.  Another location would be near the back of the car, above the transmission.  It would mean running a vent line to the back of the car, but there's a lot more room back there.

I think the purpose for that line (and putting a loop in it) is to allow gasoline vapor (i.e., gaseous gas) to escape, keep the liquid gas from sloshing out, and keep a vacuum from occurring in the tank as the gas level drops. As everyone else is saying, the loop (or even a checkvalve) doesn't make the smell go away. 

 

Charcoal canisters came up in this thread.  You may find it useful if you haven't already seen it: 

https://www.speedsterowners.com...361#5092470011527361

Thanks for that link!  

 

For anyone else looking, I just came across a really neat thread on another forum about just making your own out of sprinkler PVC! http://www.ffcars.com/forums/1...arcoal-canister.html

There's a large metal shelf under the gas tank where the horns & fuel pump are mounted.  There should be plenty of room to mount a canister there.  If you pull off on of the front wheels you will quickly see where I mean.

I used to have a very strong gasoline smell in my garage and solved it from advice I found here.  There is a one-way valve that the gas line is attached to with small radiator style clamps plus extend the vent line out the "away"ide of the valve.  Do some searches or put out an apb to locate that valve.  A small $2.00 plastic thing that lets vapors and overflow out but not back in.

 

Don't forget that gas expands a lot in the summer hot garages so don't fill that tank totally up---leave some room for expansion!

I think you are talking about a PCV valve. Problem is that if air cannot get back into the tank to fill the space of the gas used, you'll create a vacuum in the tank that will starve the fuel pump.

Justin-

 

No, it's a little vacuum check-valve installed in the breather line of the tank, backwards actually from being useful as a "breather". You can pick them up in the "Help" display at NAPA and such. Installed like most guys do, it allows air in but not vapors out. So, if the tank is full, and the day is hot, and the car isn't running-- the tank gets pressurized. I've never seen them get pressurized to the point of overwhelming the needle valves, but I suppose it's possible.

 

I've never seen a speedster with a charcoal canister, but I think it'd be a great solution to an irritating problem.

I agree, as long as you have enough space for the liquid to expand you shouldn't have problems with the pressurized vapor. My statement was regarding his claimed method of install in his car: "thing that lets vapors and overflow out but not back in".

This subject has come up in the past a few times.

I solved the problem by extending the vent tube, coiling it a few rounds then extending it down, inside the fender well, to the bottom of the pan. Then I put a plastic gas filter on the end of the vent tube with the direction arrow pointed up.

No smell. 

I second what Jack said about leaving room for expansion.

 

I didn't one time and now my tank bulges up on the top.

On my motocross bike I have a small one way vent valve that mounts on the fuel vent hose and I have never smelled gas in my garage. I'm thinking of trying this but I agree with TUB4STU it reminds me of what a SWEET car I'm driving. I have never had to leave room for gas expansion cuz filling up is always an excuse for a 30 mile (or more) drive.

Simple soluton is to route the overflow tubing to he highest possible point on the front bulkhead and fasten with a strap and screw.Then continue it back down and out of the luggage compartment to lowest point on chassis in the driver side wheelwell. Be sure to clamp the tubing at the tank vent.

As long as the top of this HOOP is higher than the tank vent you will not get any overflow or fuel smell and the tank will vent properly..

This is exactly why I am confused.  Lots of people say this won't do anything for the gas smell and that you need a charcoal canister.  

Yet some folks such as yourself say it will.  I am confused, b/c it doesn't make sense how this would do anything to stop gas vapors from leaving the tank.  

 

*Keep in mind I live in Austin, TX where it's currently over 95 degrees.

Can you post a link to the valve you use?

The bike came with it and I haven't tried it on the speedster yet. I will post link as soon as I check it out. So let me be the lab rat in this experiment.

I bet you have some raw fuel going out that vent. Make a loop high then the vent and loop it, then drop it down and run it out the rear (just before the rear tire. Worked for me.

 

Nick,

 The fuel vapor is lighter than air so the high loop will trap the fumes.  I bet you have enough slack (from your pic) to pull up on the hose. Free and easy to test it out.

 

  X2 what tomcat said.  Route the tubing directly from the overflow nipple on the filler neck to the ''highest'' possible location on the bulkhead. Clamp it to bulkhead then route it DOWN and out to the bottom of the car ,either to the left or right! Make certain the  highest location of the  tubing is  higher than the filler opening. The raw fuel can't leave the tank,as long as you have a good seal on the filler cap. You are in essence making the vent hose part of the tank. 

 DO NOTput a loop or hoop in the system , as it will fill with raw fuel and then drain, causing raw gas odors. 

If the tubing is highest on the passenger side of the car and lowest on the the driver's side of the car all raw fuel will be trapped in the tank. Even if you fill the tank to the brim the excess fuel can not leave the tank , however any fumes will vent.

If you terminate the vent hose at or slightly below the bottom of   and outside the car you won't smell any fumes. Also, on right turns sloshing fuel is trapped in the neck of the tank and on left turns the sloshing fuel is trapped  in the other corner of he tank.

We have had t 90+*days here  many times and I have never had an issue with  fuel odors or overflowing the tank.

Hope this helps,Tom