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I got a valve adjustment done last weekend and I still hear a low sizzling/tapping noise coming from the motor under acceleration above 2K Rpms, I don't know where its coming from I just know Its annoying hearing it when I get above 2K rpm, is this normal, I'll try to get a sound byte of the noise buts its not very loud but it is noticeable. Could this just be the fuel injector noise we all have?

Any help is greatly appreciated.