I Have A Big Problem. There Is A Loud Ticking Noise Coming From The Valvetrain Of 94 Ls. I Just Recently Changed The Exhaust Cam Plug On It. Should I Have Adjusted The Valves At This Time? If Any One Has Any Idea What Is Causing This Noise Please Let Me Know. The Noise Started To Get Really Loud Today And The Car Shut Off Twice On The Way Home From Work, But It Started Back Up Right Away.