Recently took my car in to test for emissions...failed miserably...they reported gas coming out my tailpipe...what's wrong ???

Get that fixed asap as gas can explode in the converter or muffler. You must have a fouled plug or dead cly.

I saw this happen before on a fier fly that the valve had a hole burnt right thrue it. It might be your problen or your engine is running too rich on fuel.