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There are 2 "common" noises on these.
1- exhaust manifold noise- they make a tick noise that is onlhy noticible for about 30 seconds when the engine is started.
2- Valve noise- this will sound more like a motor knock then a tick, this is caused by carbon deposits and a strong top engine cleaner applied directly to the intake resolves this.
Most auto parts stores do not sell really strong ones, most dealers do.
Chemicals made by BG products, MOC or wynns make great strong cleaners, toyota also makes a good one, you basically need to inject the solution into the intake while running until the engine is nearly flooded, then shut off and let it soak for a couple hours to break down the carbon that causes the valves to literally stick when cold.