Why do you smell gas really strong on a cavalier 2.4?

Anyone would think that it is leaking...you must open the hood, follow the fuel lines all the way back to the tank..Remove the vac hose from the pressure reg see if fuel is coming from there. It is not suppose to. Remove your spark plug and look at them for any sign that fuel is pouring into the cylinder. That may mean that your FUEL INJECTOR is not working correctly. Another Words fuel injector is staying open, when it should be closed. The raw fuel is getting pushed out the tail pipe on the exhaust stroke....That will RUIN a cat converter and your O2 sensors.. Nether are cheap....and there is a high probability of a huge fire.