I hear an internal engine noise.
If you are hearing an engine noise, the best thing to do is to let an experienced mechanic listen to it to determine if it is coming from the internal, or external engine components. External problems could come from the belts, pulleys, or other external components. If the noise is internal, then the noise could be piston slap, or problems with the bearings, lifters, valve train, or rods. I recommend having a mechanic, like one from YourMechanic, run a detailed inspection of your engine noise, and recommend the best path to repair.
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