Quote:
Originally Posted by Homeslice
Why would it bounce around every second? Mine didn't. It only moved when I revved the engine.
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Simple...your gauge is not that accurate. It is prolly in the zone of +/-3 PSI in order for the spring to even move. It is just a mechanical buffer instead of an electronic one.
If you were measuring the oil pressure in 1kPa increments, the thing would be bouncing all around at steady RPM because the oil pump creates pressure oscillations. You just choose to buffer it to 300kPa instead of 1kPa. Get it? It is really no different that waiting a few seconds and averaging the results, but rather a different way of doing it.