Oil pressure dropping

[Rawze]

(07-29-2020 )carco Wrote:  ... about 38-44psi hot. At cruise 1700 rpm/68mph steady flat terrain will vary at times down to 38psi and back to 34psi.


Also hot low idle about 14-15 psi now.
...

34 psi is only a psi or so lower than normal. 35,36+psi when going down the road and engine is hot is ok oil pressure for an isx, and is quite normal. 34 would be normal if the oil temps are getting high though (above 230+).

14-15 is a bit low for idle pressure though. -- it should be around 18, maybe 20-22 or so usually.

sounds like some internal hemorrhaging of oil somewhere (like mentioned above,... spun cam bearing, loose or improperly installed retainer bolt on a rocker shaft,... excess wear on rocker bearings, excess wear on a rod or main bearing ... ... something ... , or possibly something wrong with the pump.

what are oil temps running?

maybe pull valve cover, crank it up, watch for excessive oil gushing out somewhere?