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Hi, 2001 catera slight knock once warms up goes away. I am 3rd owner. 56k. Seems has leaks before and fixed, everything seems ok. But I can hear slight knock. Oil pressure ok? help?
What part of the engine is this knock coming from? High pitched knock/tap in the valvetrain? Lower pitched knock in the crank case? does it change with engine load, or just engine speed?
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