Chances are there is a leak in the EVAP system. This system is responsible for maintaining fumes from the fuel tank so they don't enter the atmosphere. It could be a fuel cap, a rusted filler tube, hose.
To start checking, you could have the EVAP system fogged to see if there is a leak. Fog is placed onto the system and then it will leak out if there is a leak.
Also, keep in mind, gas will evaporate, so seeing puddles on the ground usually won't happen.
Thursday, June 18th, 2009 AT 12:10 PM