I have my doubts that the knock sensor could pick up harmonics....the knock sensor is a microphone(stethoscope) that converts sound vibrations to electrical signals. Valves opening and closing, or injectors pulsing on and off or the sparc plugs firing doesnt affect timing. Lifter tick is a whole different scenario cause its alot louder than any of the prev scenarios with the exception of the injectors which are actually mounting on the intake which is isolated from the engine block by a cardboard gasket. This is the same theory as wrapping the knock sensor with teflon tape and making sure not to overtorque it. The teflon is an insulator and will deaden the sound abit and is especially effective on higher frequencies.


Most knock problems can be fixxed by zip tie'ing the knock sensor to the fire wall in any case...LOL

[ November 28, 2001: Message edited by: Len Randall ]