I got some serious gas smell under the hood front near where the cannister is. It only happens when I run the car for a while and get the temp up and run for a while.. IE when I come home from work, and park in the garage, the whole garage smells like gas very quickly. But if I just drive around the block or a similar short trip, I don't have the odor.
I was thinking maybe leaky fuel injector, so I replaced them (130k miles, time anyway) Didn't fix the bad smell.. So I have traced every line from the gas tank into the engine bay and could not find a leak.. At this point I am stumped, I replaced the vacuum line from the throttle body to the canister, but that didn't help.. So I am wondering if they simply go bad after a while..

Thanks

 

Yes they can get saturated with fuel if you overfill you gas tank. They can also crack and the valve on can go bad.

 

Did you remove the canister and replace the filter? It might be saturated or worn out. Worth a shot, the filters are very inexpensive.