Greetings, all. I have developed a ticking noise that I'm a little concerned about on my '99, but it doesn't sound like it's mechanical. It almost sounds like a spark plug wire is not down on the plug all the way & the spark is finding another place to 'light up'. With no plug wires to worry about on this model, is it possible that the coil/cap is defective on one or more cylinders? I've had no noticable running problem, but before I wash down a cylinder by not having fire in the hole, I come to you all for advice. I feel like an idiot, but I've not had the plastic off yet to see what's what. Thanks