In general the more symmetrical the waveform and distribution above and below the zero reference line, the better the condition of the engine. This is where comparative analysis of cylinders becomes important. Engine problems will always cause a fluctuation of the waveform that extends above or below the average of the other cylinders. By using the first cylinder for synchronization, a faulty cylinder can be determined. Once you have learned to use the sensor combined with the timing chart, you will be able to observe the real-time operation the valves, cylinders, njectors and thereby find burnt valves, bad (dirty) injectors, wrong timing and other engine performance problems without major disassembly of the engine. You can now have a more complete picture of an engine’s performance, quickly and easily. With the Pressure Pulse Sensor it is possible to see what is dynamically occurring in your engine. Engine analyzers tell us what the ignition system or sensors are doing, but it is difficult to see what actually happens in the engine without intrusive tests. The Pressure Pulse Sensor is unique because it looks at pulses in engine airflow, allowing you to display “engine pulse” on standard oscilloscope. Any change in the shape or asymmetry of these pulses, indicate an engine problem. All engines produce such waves and their shape can be predicted. In internal combustion engines during normal operation, pulsating pressure waves are generated in various car systems. It’s a transducer that converts changes in the gas pressure to an electrical signal. It can be used only to display the pressure changes. Note: Pressure Pulse Sensor (PPS) doesn’t measure the static pressure.

Pulse pressure