A knock or a click? Inside the engine, knocks are reserved for connecting rod bearings, they don't go away. A click is like a collapsed hydraulic valve lifter, putting your ear against the camshaft cover, would be the loudest. Trained ear picks this up quickly. As the engine warms up, this click will go away for a lifter that is not stuck that bad.
Adding 4 ounces of Seafoam to your engine oil may clear this up, they don't get better, but get worse. Usually not a problem if you are using a dexos approved oil, if you get your oil changed professionally, use this word with a grin on my face, don't know what they are using.
Is this normal? No, sign of a dirty engine. New valve is only around five bucks, but the labor will kill you.
Adding 4 ounces of Seafoam to your engine oil may clear this up, they don't get better, but get worse. Usually not a problem if you are using a dexos approved oil, if you get your oil changed professionally, use this word with a grin on my face, don't know what they are using.
Is this normal? No, sign of a dirty engine. New valve is only around five bucks, but the labor will kill you.