Long story short, had check engine light on...found out I needed the EGR cleaned out, I was getting a misfire in a cylinder and I needed a new secondary o2.

Now I had the o2 and EGR done at a garage and a friend and I did the plugs (NAPA premiums). Car runs noticably better.

Today check engine light is back, car emits strong gas smell. I pulled the code 71 which is a misfire (although it feels like it's running fine).

car REEKS of gas, check engine light will sometimes go off and the smell went away..

Now I still need to replace the plugs..I have cheap cheap Autolitesin there now...my Dad got OEM plugs he wants to put in tomorrow. A friend suggested one of the wires could have not been seated right and that would cause a gas smell.

I honestly don't know. Until today I had NEVER EVER smelled gas.

Please give me some insight.