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International Automotive Technicians Network
Re: First Use of First Look Sensor (waveforms inside)
Posted to Technical Discussion Forum on 1/7/2019

A relative compression test(amp clamp/voltage drop type)will show a parade of all cylinders. The peaks of the waveform should be very close to equal. Lower peaks will indicate lower compression. The test is very quick to perform and gives an overall look of al... Login to read more.