If my timing belt breaks will it destroy my engine?
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2002 Toyota 4Runner Question: If my timing belt breaks will it destroy my engine?
Answer #1United Auto Service Center from United Auto Service Center, June 11, 2012, 09:14Technician
Generally, no, but...
It depends on conditions when the belt breaks. What I mean by this is, if the engine was being over-revved at the time the belt broke (say you accidentally downshifted from fifth to second instead of fourth while trying to pass on the freeway) then there is a good chance that you could do valve damage. Otherwise, you are safe.