Im getting everything BUT spark. Hooked up thee ol' timing light and it won't flash due to no spark on the 6th cylinder/spark plug position. I didn't have any problems till recently and whenever i crank it over it makes a pop and then the whole garage smells weird. Cleaned the grounds, checked the wires etc and nothing. What other ground wires do I check? Is there something im missing? Ground wires to ignition, CPS, and coils are in check and the wiring is all there. Really strange I hope I made the problem clear. Any ideas? I just need a third party view