Can bad gas cap be the problem
Thread Starter
Pro
Joined: Oct 2003
Posts: 707
Likes: 18
From: Reinholds PA
Can bad gas cap be the problem
Replaces gas lines and clamps at rear of car but still have some fuel odor in garage Could it come from bad gas cap I replaced the gasket but that didnt help could the cap just not fit correctly
Drifting
Joined: May 2006
Posts: 1,480
Likes: 2
From: Circleville Ohio
Vader vette
Does your car have one of those fuel catcher cans under the hood sometimes those can be A problem. Most gas caps are vented or the tank would collapse due to pressure.Mine sits in the garage during the summer And I got some oil leaks but no gas smell Check that canister.
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Back when I had a carb my garage always smelled of fuel. After the engine was shut down the heat would travel up into the carb and the fuel would percolate.
With EFI there is never any fuel smell and my gas cap is vented.
With EFI there is never any fuel smell and my gas cap is vented.
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
I'd replace the carbon canister as they sometimes will give off fuel odor if the vacuum valves don't work right. Check to make sure all the hoses to and from it are attached and not split.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Your '71 [and mine] has a non-vented gas cap. It seals the tank and shouldn't leak any fumes. But when you are working on something 35 years old, anything can happen...a split in an old hose, a crack in the hose near a clamp, damage to a tank fitting, etc. The other folks suggestions about the cannister and the vapor return lines are all possibilities. If you didn't have furel smell before you worked on the lines/tank, the problem is most likely to be where you were working. Think about all the stuff you worked on and double check everything there first. Good luck.
Drifting
Joined: Jan 2006
Posts: 1,832
Likes: 38
From: Cedar,BC
Check all the hoses at the tank and check the plastic vapour separator on the driver's side.Mine was cracked and it finally took a hard turn with a full tank to spot where the problem was.It wasn't obvious until I removed one of the mounting screws.
