A faulty fuel damper can produce a ticking noise, which can be heard inside the cabin when the engine is idling. Replacement of the failed dampener should correct this problem.
Car problem reports
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Most reported 2007 Nissan 350Z problems
There was a service bulletin addressing a problem with front tire wear and tire noise. The tires would "growl" or "roar" at speeds under 30 mph or under moderate braking on smooth roads. The repair first involved resetting the front alignment and then either replacing or rotating (side-to-side) the front tires. This fixed the concern for some, though others still reported a recurring issue.