Thread: Gasoline odor

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well i think it you coil up15 feet of hose lay on top of the tank off the nipple and then run it up thru the trunk till you go up as hi as you can then a 90 run it back out . use a vented cap that should do the job that would be over 20 feet that should do it..... over kill you bet yep i maybe kidding here but not to much if your talking a J bend you could very well start in back of trunk run it up going forward till the back panle of the back of your seat hide it under your side trim of the 1/4 panle hook it to trunk drip rail then run it on the upper back side of the top of the rear 1/4 panle running the hose back thru the hole were it came and then out give you more then a J bend and if the tank get hot and fuel move s up that what really going on here with that low vent point on the tank every time you hit the brakes or if you sitting on a low front rake she going to want to siphon the the vent should be at the hi point of tank just a bad deal less it has some trick baffle and if so its not working very good ?

Dave,
Did you get rid of your gas odor in the garage? I installed a rollover vent extension like yours to be sure I'm above the liquid, but I ran my vent hose out at the 90 and down to a fitting in the floor. I'm getting a strong gas odor, and I guess I need to put a "J" loop in the tubing to hopefully stop the fumes.

Roger - occasionally I'll still get a gas odor, but for the most part gone.

I have some today, but I just had much of my gas line apart for replacement of some "claptrap" so might have a minor leak - which I'm abut to check

This is really strange. After reading the entire thread I can't imagine what would make fumes like that. We had 3 of our cars sitting in the shop with fuel in the tanks and never get any hint of gas odor. We even have one open jerry can that Dan has been using to draw gas out of for his RPU and no fumes from that one either.

My 23 just had a simple vented cap,and my 27 and Dons T have simple hose loops out of the tank vents. Very strange that you are having that issue.

Don

Originally Posted by Itoldyouso

This is really strange. After reading the entire thread I can't imagine what would make fumes like that. We had 3 of our cars sitting in the shop with fuel in the tanks and never get any hint of gas odor. We even have one open jerry can that Dan has been using to draw gas out of for his RPU and no fumes from that one either.

My 23 just had a simple vented cap,and my 27 and Dons T have simple hose loops out of the tank vents. Very strange that you are having that issue.

Don

Don - that vented gas cap may be what I need to install. I shouldn't need one with the rollover valve, but that's about the only thing I haven't done since I don't have a spare plus I really don't want gas to slop on my nicely painted '32 style gas tank (it's a '71 Jimmie cap, I believe that Tanks supplies)

I never had a problem with my '23 either and that only had a roll over valve and an unvented early Jag(?) flip open cap.

Originally Posted by Louey

Have you thought about using a small charcoal canister ? To store the fumes, until you start, and run the engine ?

I still can't understand why any of that would be necessary. On our stuff we are running nothing special, just looped hose or not even that, just vented caps, and not a whiff of odor. Something is odd with this one IMO, maybe that rollover thingie is doing something strange. I could stand right behind any of our cars and even remove the caps and get no smell.

Don

Just a thought, maybe the heat from the exhaust is just enough to expand the gas to start a siphoning cycle, its happened on my `64 pu, with the tank in the cab, on a real hot day, pushed the gas right past the cap and ran back down the filler tube into the cab, it was bad for a week...

Could it be that with a vented cap the odours are released slowly but with a non vented cap pressure builds up and then releases quickly make the odour more pronounced ??? just an idea