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Old 11-13-2008, 11:32 AM   #8 (permalink)
The Atomic Ass
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Location: Mason, OH
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Priinocchio - '17 Toyota Prius Two Eco
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Quote:
Originally Posted by holypaulie View Post
Is it possible to have too loose or too tight(from factory) valve clearance after only 58,000 miles? I don't hear any loud valve noise, just ticking.
I don't know how cars with adjustable valves are, but my Burgman demands clearance adjustments at nearly oil change intervals for the first 10K miles. After that it settles down and doesn't change much for 20K or more.

Cars engines have a lot more sound insulation to them, so even a very quiet noise could mean loose valves. Though really, valves that are less than half of the spec range loose, (eg, range of .006-.010 and valves are at .012), is good for low end power and fuel economy.

Tight valves don't make noise, and that's when you should worry.
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