What might cause hyundai accent evap leak?

An EVAP leak on the HyundaiAccent can be caused by a variety of factors -- the moSTSimple of which is a loose gas cap. Before You start trying to diagnose Your emissions system, it's wise to make sure You don't just need to tighten Your fuel cap just a bit. This can save You a ton of headache, as well as a fair amount of money. If Your issue isn't so simple, You'll next likely look to the fuel filler neck. Rust and rot can cause a point of failure there. If no issue there, move on to the purge canister valve and the charcoal canister itself. It's best to have EVAP issues diagnosed by a professional automotive shop, but by process of elimination, it's possible to do it Yourself.