• Welcome to ClassicBroncos! - You are currently viewing the forums as a GUEST. To take advantage of all the site features, please take a moment to register. It's fast, simple and absolutely free. So please join our community today!
    If you have problems registering or can't log into your account, please contact Admin.

I smell like Gas after I drive my Bronco

advtrmn

New Member
Joined
Aug 10, 2010
Messages
31
Loc.
Colfax, CA (Nor Cal)
So proably a simple answer.

I love driving the new Bronco. . . has a 302, with edelbrock Carb. Now all is good when driving, but after I get home, the wife will not let me in the house unless I am going to shower as I smell like Gasoline. I cannot figure it out. . . might be a mixture of Gas/Exhaust, but more gas than anything else.

why would this be? is there a leak somewhere in my exhaust system that is putting unburned fuel in the othe cab that is making me smell this way? how can I test or figure it out?
 

Explorer

Bronco Guru
Joined
Mar 2, 2008
Messages
4,390
Loc.
Raphine, Virginia
If you have dual tanks, check the transfer valve, notorious for leaking. Where you have exhaust exiting can make a diff on exhaust fumes too. Along with the canister and lines behind the drivers seat if they are still there. Just a few things to check.
 

70_Steve

Old Guy
Joined
Dec 13, 2002
Messages
8,317
I smell like Gas after I drive my Bronco
Then maybe you should avoid the refried beans at the Mexican restaurant!!!:eek:

It could be a combination of things. For example, you could be running very rich, and the exhaust could be circulating back into the cab. Or, you could have a small gas leak in the engine compartment, and have several holes in the firewall/floor, allowing the gas fumes into the cab.

Can you give us details on how the Bronco is configured? Engine? Carb? Hardtop/Softtop/no top? Exhaust? Whatever else you can think of?

Remember, pics are worth a thousand words.

Edit: Oops, missed the 302 w/Edelbrock carb.

So did you install the carb? Has it been tuned?
 

Greg_B

Bronco Guru
Joined
Apr 15, 2010
Messages
2,087
Loc.
Cohutta, GA
Mine was like that for a long time... PO had taken out all the emmission stuff. I reinstalled the charcoal canister and all the emmission lines... no more fuel smell unless I leave the lift gate up then it pulls in exaust fumes.

Greg
 

jdowns67

Contributor
Owner since 2001
Joined
Feb 27, 2010
Messages
37
Loc.
Wilmington, NC
I used to have that problem before I put in my new motor. I really think it was because I was running rich and maybe a weak ignition not getting enough of the fuel burned. It was like a gas smell but really more like a nasty exhaust smell.
 

Mossie

Jr. Member
Joined
Apr 13, 2010
Messages
64
Loc.
Kalispell, MT
I had a similar issue but was greatly improved with some adjustments to the carb and a carb rebuild kit with new gaskets. I had some fuel that was leaking out of the carb and on to the top of the intake manifold. It would usually burn off before I could get the hood popped and see the problem.
 

kinder

Jr. Member
Joined
Jul 18, 2009
Messages
127
Same issue when I first got mine, all the vent lines from both fuel tanks were cracked and leaking fumes and a bit of gas, the carcoal canister was missing and the line just dumped out by the passenger door and the carb needed a serious rebuild. I replaced all the rubber sections on the vent lines, added the canister and rebuilt the carb, now the excess gas smell is gone.
 

NJB71

Bronco Guru
Joined
Aug 26, 2008
Messages
1,047
Loc.
Little Silver, NJ
I re-ran new vent lines, bypassed my collection tank(which is incredibaly located inside the cab behind driver seat) to my existing charcoal cannister, viola NO fumes, no smell....if u dont have the cannister, i think explorer cannisters are fine and are available at pick and pulls
 

DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
47,355
If you bypass the inside condenser tank, you should also use a later model charcoal canister up on the firewall instead of the lower, frame-mounted one used on most Broncos.
Reason is you don't want liquid fuel to get into canister.
For '77 (and maybe '76 as well) Ford also used a check-valve in the line between the tanks and the charcoal canister.

When I had my fuel smell, I just sealed up the seams of the tank with goop and left it functioning. Then the fuel selector valve started leaking, so I went to an electric valve and sealed up the old hole in the floor. Works great!

Paul
 

mrborders

Jr. Member
Joined
Jun 16, 2010
Messages
99
just bought a nice 77 and when i get home i smell like exhaust.
my exhaust goes strait out the back and the swirl behind the vehicle (vortex) puts it right in the cab. definately have to put the exhaust out the sides on an older vehicle that dosnt seal well in the back. good luck with the gas smell
 

NJB71

Bronco Guru
Joined
Aug 26, 2008
Messages
1,047
Loc.
Little Silver, NJ
If you bypass the inside condenser tank, you should also use a later model charcoal canister up on the firewall instead of the lower, frame-mounted one used on most Broncos.
Reason is you don't want liquid fuel to get into canister.
For '77 (and maybe '76 as well) Ford also used a check-valve in the line between the tanks and the charcoal canister.

When I had my fuel smell, I just sealed up the seams of the tank with goop and left it functioning. Then the fuel selector valve started leaking, so I went to an electric valve and sealed up the old hole in the floor. Works great!

Paul

forgot to mention in my suggestion, that I did bypass the condesor tank, BUT that I installed a marine type check valve off the tank that keeps liquid in and vapors out, so I was able to utilize my lower mounted original charc cannister
 
Top