Oil pressure loss

[old guys rule]

My old brain is trying to remember The usual suspects when a motor loses oil pressure as it warms up and when it slows down

 

[66 Sat]

More details needed.
Obviously it drops when it gets warm as the oil thins out.
It also drops with revs as the pump is turning slower.

 

[WileERobby]

Could be the oil pump or the pressure relief valve.

 

[dadsbee]

What it's supposed to do... unless you're meaning to zero.

 

[HALIFAXHOPS]

Also how many miles on it?

 

[yella71]

bad main bearings

 

[zyzzyx]

Immediate loss of oil pressure usually means a bent push rod and a lifter that popped out of the bore.

 

[ruffcut]

Could be low on oil also! ruffcut
Not much info to go on.....

 

[Dave6T4]

Could be cam bearings with low oil pressure at operating temperature when idling. These won't make a sound like main or rod bearings. Oil pressure gauge gets its signal off the cam gallery.