Gas smell????

[Gigante]

The other day I turned my car on and put the heater on to warm up and after a couple minutes I smelt unprocessed gas inside my car. Sometimes it smells like gas and sometimes not but I really want to get it fixed. Any ideas of what it could be?

[cocobob]

If it happens after filling up its could be a leak at the tank or fill up hose. If it happens even when the tank is low check the evap solonoid tubes. They sometimes crack at the nipple connection and when starting the evap canister is used to save on waisted fuel.
Cheers