I started my car this morning and gas started coming out of the muffler. why would that be happening
As you have been told get the codes first as it can be due to your air flow meter telling the ECU to give more fuel.
Could be a few things I can think of, leaking injector, leaking / bad fuel pressure regulator, or defective O2 sensor(s) making the computer read high air content and the ECM is dumping in more fuel to compensate. You can check your plugs for gas fouling to isolate either a single cylinder or multiple cylinders will give you an idea of what to look for. If only very fouled on a single cylinder, probably a bad or leaking injector on that cylinder. If evenly distributed among all cylinders, fuel pressure regulator. If you have a check engine light on, get the codes read at Autozone (free) and it may tell you if it is an O2 sensor problem. Random misfire or multiple misfire codes would bring me back to the fuel system components. Get this taken care of right away and change your oil when fixed, you can cause severe damage to the engine with fuel going excessively into the cylinder(s) and / or crankcase.
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