Re: Okay, why is oil pressure going UP at idle and DOWN at speed??

Posted by Tim Cole On 2022/5/30 11:56:46

That's a weird one. Perhaps try hooking up an aftermarket gauge. Or test 20 weight oil because there might be some foaming action going on. There also is that feed valve to the pistons that might be causing a problem. The oil feed to the cam is taken off the rear main and that is where the gauge tap is. Another possibility is there is something floating inside the oil pump screen that rises when the oil gets turbulent.

Hopefully somebody didn't tamper with that gauge to make it read high. So the first thing I would do is test an aftermarket gauge.