Discussion Starter · #1 ·
My Dodge Durango 2003 has come into some bad habits lately. The check engine light is on, but when the mechanics put the machine on to check it, their machine wouldn't even register that the light was on. Ontop of this, sometimes when I press on the gas black smoke rolls out, and now, it smokes white smoke almost constantly after warming up. It also smells sulfery when it is running..... The mechanic said it was running rich due to a wiring issue but I don't know where to begin looking, and I can't afford for them to do it. Any advice on what it could be if the mechanic is wrong, and if the mechanic is right, where to look and how to fix it?