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Old 12-07-2010, 08:27 AM
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Re: High engine knock 1999 g cherokee

An engine bearing would be a deeper klok klok klok from lower down, so from your description it sounds like valvetrain noise.

Has the temperature in your area suddenly gone colder in the last 2 weeks? What grade of motor oil are you using? A heavier oil in colder temps can cause valvetrain noise.
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