I don't have the "tick" either, but apparently even if you don't hear the tick you have the tick. Make sense of that. I don't hear a bird noise going "Caoo kaaa!" either so my engine must be making that noise too.
If you google it you can find some videos of what the tick sounds like. Its bad. I feel for anybody who has it. I hope it doesn't happen to my car. Fingers are crossed.
Ron Burgundy: Brian, I'm going to be honest with you, that smells like pure gasoline.
Brian Fantana: They've done studies, you know. 60% of the time it works, every time.