Casey: It may not be your timing chain..... Check your exhaust manifold gaskets for leaks. Your engine will make tick, tick, ticks sounds when your engine is cold and after warming up some 20 minute later, the sound will subside or go away. I had that problem until I had PJ Grady change the gaskets. Kayo Ong #5508 Lic 9D NY [Non-text portions of this message have been removed]