Its a 99 GT with 31K miles ATI intercooled 9psi. Burning oil smell (smoke from tailpipes) and missing. Had codes pulled cyl #4 is missfiring. Did relative compression test found #4 down less than 10% Pulled that plug found oil burnt on end of plug. Driving home in traffic when I noticed the smoke, didnt start missing til next day. No noise what so ever. Ford wont touch it and I dont want to take it just anywhere. Any suggestions or if you know of somewhere I could take it would be greatly appreciated. I live just North of The Colony.