Question about 2007 Toyota Yaris
Knocking can be caused by a bad bearing somewhere in the engine. When the engine is accelerated it might go away due to higher oil pressure.
When did you have the oil changed and how many miles does it have?
Is the knocking rapid (5 or 6 times a second) or periodic (1 or 2 times a second)?
Some knocking is due to low octane gasoline if you experience it at highway speed.
Good luck on solving this knocking problem.
Posted on Oct 07, 2010
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Posted on Jan 02, 2017
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