Quote:
Originally Posted by whoender
I have an 02 Jeep Liberty 3.7. It has a top side engine knock. I removed valve covers to inspect the rocker. All still attached and no sludge or carbon build up. There is not an idiot light on the dash and no smoke nor loss of power. I am at a standstill. Any suggestions?
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Try some hydraulic lifter cleaner put in oil about a week before you change the oil.