Club Cobra

Club Cobra (http://www.clubcobra.com/forums/)
-   BackDraft Racing --- (http://www.clubcobra.com/forums/backdraft-racing/)
-   -   Gas Smell (http://www.clubcobra.com/forums/backdraft-racing/75142-gas-smell.html)

picross 12-12-2006 12:23 PM
Gas Smell
 
I just got a backdraft this weekend (2 years old, 670 miles) and there is a significant gas smell in my garage. I checked and there are no leaks underneath on the floor. I can smell gas when i take the air cleaner off, but it doesn't seem strong enough to make the whole garage smell.

Anyone else have similar issues?

Cashburn 12-12-2006 12:31 PM
How full is the tank?

RedBarchetta 12-12-2006 12:34 PM
You're going to get a lot of residual vapors trapped in the sidepipes. I can still smell racing fuel in my garage a good 3-4 days after a drive. It's part of Cobra ownership, in my book (residual gas fumes). But next time you drive check the carb after shutdown to determine if you can hear any residual fuel trickling into the venturi. You may require a float adjustment in the bowls to lower the fuel level, accordingly.

-Dean

pmfranke 12-12-2006 12:35 PM
check the one way valve that lets air into the gas tank as it's being used to see if it is stuck open.also the le mans cap on my car doesnt seal all that well.Some people use a tennis ball as a secondary seal under the cap. Good luck. peter

picross 12-12-2006 12:36 PM
i had the smell both with 1/2 tank and a full tank. I'll check the float level to see if that might be it. I do disconnect the battery when it's sitting, so the elecetric fuel pump is always off.

Tony Radford 12-12-2006 12:51 PM
Check the filler hose that runs between the Lemans cap and fuel tank. Mine was loose and filled my garage with fumes.

Speedysnake 12-12-2006 01:02 PM
I had a similar problem with my BDR when I first got it. Check all the fittings and the fuel gage sending unit flange for slight leaks. I didn't have enough of a leak to show up as wet spot on the floor, nonetheless I had a strong odor of raw gas in the garage. after solving the minor leak problems, I've only had that familiar smell of gas after a good ride.**)

ezplans 12-12-2006 01:26 PM
After a drive, the gas smell comes with the territory.

Bill

Poolw 12-12-2006 02:10 PM
Check to see if the air cleaner is hitting the choke. The guy who brought my previous cobra noticed that the top of air cleaner was rubbing on the choke plate. He added a 1/2 spacer installed on the air cleaner to fix. Just a thought.

xlr8or 12-12-2006 02:16 PM
Quote:
Originally Posted by picross
i had the smell both with 1/2 tank and a full tank. I'll check the float level to see if that might be it. I do disconnect the battery when it's sitting, so the elecetric fuel pump is always off.

Try turning off the electric pump when approaching the house. This will allow the fuel bowls to empty out part way as you pull in. If that makes a difference then your floats are too high. Might also be heat soak sets in after parking and is pushing fuel out of the bowls.

Dan Stryffeler 12-12-2006 02:21 PM
There was some discussion in a thread a year or so ago regarding the use of braided rubber hose for fuel line... the thinking was that fuel odors would leach out through the line; i.e., run hard lines for fuel and only use rubber to make connections.

I have braided lines, but have always assumed that it is my carbs which stink, (or sweeten up depending on one's preferences), my garage.

- Dan

Blittleton 12-12-2006 03:01 PM
I had one of my customers complain once about the fuel smell, I found that the car was too rich. I leaned it out just a little and the problem went away. Easy fix.

Bill

picross 12-12-2006 09:01 PM
it seems the vent hose running from the tank to the gas cap was partly to blame. The fitting on the gas tank where the tube attached was loose - i tightened it and re-tightened the hose and the smell is mostly gone. There is still a slight odor - i'll check the other items as well.

Thanks for all the help and the quick replies.

Speedysnake 12-13-2006 05:24 AM
Gas smell, good & bad
 
It seems that we've been talking about two different smells, the smell of the residual fuel in the exhaust, cobined with the heat from the engine, and RAW gas. I kinda like the smell of the hot car when i bring it in the garage after a good run, but that raw gas smell is scarey!

DC COBRA 12-13-2006 07:20 AM
I used to run race fuel (leaded 110 octane) in my car all the tme, never had any fuel smell when parked in garage. Although a couple of occasions I had to put super-unleaded in it to get it home, although it was usually no more than five gallons at a time. Everytime I did this it would have a very strong gas smell in the garage, I had seen some articles on steel-braided line and the possibility of gas seepage thru them. With todays chemicals and crap in gas I could believe that. I am fairly sure that was cause in my case, even though I did use Earl's hose and Aeroquip fittings. Can honestly say never had the problem with the race fuel I guess it was of better quality since it was about $4.50 a gallon.

DON

jp65cobra 12-13-2006 10:32 AM
picross

I get venting vapor and the smell of gas when I fill up close to home and return with it to full. I should check my connections as you did but I suspect I am just over filling and just need to burn a little off before parking in the garage. I never get this when I return with a little less in the tank.

John

cbreez 12-13-2006 10:35 AM
don't forget to check the gashole! LOL

JayBar 12-13-2006 02:38 PM
My BDR also made the garage smell of gas. AS has been said it's part of owning a Cobra. But I did change two things, not for the purpose of stoping the smell but for other reasons.
I shortened up the tube from the filler cap to the tank. I made it as short as possible. This stoped gas from pouring out of the top when I gassed up and also allowed me to fill up the car with another 6 gal's of gas.
Then I got rid of my Holley Street avenger with an electric choke and went to a double pumper with no choke.

Then one day noitce the garage did not smell of gas. I can't tell you which mod did the trick but I would lean tward the carb.


All times are GMT -7. The time now is 07:09 AM.

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: