I thought I would try posting this question here because you wagon owners may have experienced this problem. My 65 wagon has a non vented gas cap and a fuel tank vent hose that runs in the factory location along the filler neck to the fuel door. When I drive the car in warm weather with the driver's window open, I get a very strong fuel smell. When the windows are closed or the passenger window is opened, there is no smell. There is also no smell outside or around the car when the car is standing still. The tank was drained and professionally relined about eight years ago. There are no signs of leaks. The filler and vent hoses and clamps are fine and there are no leaks on top of the tank. Has anyone else had this problem? I was thinking about adding a charcoal canister and a vapor/vacuum line from a later car to get rid of the problem. What would I need to do that?

A non vented cap??? The only cap for a wagon I have seen listed is the vented ElCamino one. The other car models use the non vented cap and have a vent at the rear of the gas tank not at the filler tube.

Rene
66_Malibu

The vent line runs from the tank to a hole in the body behind the filler tube door. The car had the original non vented cap that I replaced with a locking non vented cap. I thought all Wagons and El Caminos used non vented caps and all sedans and coupes used vented caps in 65.

http://yearone.com/serverfiles/fbshopmain2.asp?cat=0

The Year One part descriptions are deffinately wrong for the 66-67 caps.The vent hose connects back to a nipple on the fill tube right below the cap so they must be vented.
Jim here is a post on caps where you agreed with me...lol
http://www.chevelles.com/cgi-bin/forum/ultimatebb.cgi?ubb=get_topic;f=30;t=001251

Rene

You're right, I did get a little confused when I wrote this post (must have been all the fuel vapors I've been breathing); anyway I have a VENTED fuel cap and I still have the problem. Any suggestions?

ttt

Try adding fuel BEFORE you go out drinkin! This ussually creates a non-spillage situation as to where you do not have to snort gasoline fumes. When done afterwards chances are you dripped, overfilled, spilled and most likely got it on your hands, sleeve and shoes. This will create the sensation that something is wrong with the automobile's fuel tank or relief system itself. There is nothing wrong with your car. Next time try it my way and I will garuantee no fumes to be smelled. graemlins/clonk.gif

Try adding fuel BEFORE you go out drinkin! I wish I could say it was the alcohol that caused the problem, but I don't drink much and certainly don't drive or fuel up my cars when I do... graemlins/beers.gif Anyway... the problem occurs when the tank nears the last quarter of gas too, so I don't think it is from over filling.

I'll tell you what I did to my '70 chevelle wagon. Same deal, fuel smell only on fill up. It was the fuel sensing unit gasket, I had to take my Drummel cutting wheel and cut a square out of the top section where I thought the unit would be. On the inside just to the front of the filler door about an inch. graemlins/thumbsup.gif Well I found it rather simply, pulled it out and put in the new gasket.Bent the flap back down and anway we go. This was way easier than dropping the whole tank. Hope It helps!