I have a 2006 Chevy Trailblazer with the 5.3 V8. The engine light is on for a cylinder 1 misfire and the engine light flashes while driving along with smoke that comes out the exhaust. Im mechanically inclined for the most part but i am no mechanic so i dont know everything. Any suggestions would be greatly appreciated. I also had it checked over and there is spark and fuel to that cylinder but little to no compression. I bought it about a month ago and it has been doing it since i bought it.