I've noticed that my oil pressure is getting lower then it used to be... While the engine is hot, I REV it up around 5000 rpm, the reading used to be around 75 psi, but now, same hot engine and same rpm, the psi is always keeping at around 50 psi and not going up.

When the engine is just started and cold engine, the reading used to be around 75 psi, but now is just a bit over 50...

I've just changed oil (5W-40 Lubro Moly), with a Japanese branded oil filter (some OEM brand from Japan, it looks like a Honda OEM oil filter).

Is there something wrong? are those reading still normal?
What's the normal oil pressure reading anyway?

Please give me some advice..thanks a lot.


- D16Y8 motor (1999)

 

bump

 

check the oil pressure with a gauge/tester. those are usually more accurate then anything you can install, might just be your gauge, if its not then you have a problem cause that is a little low for my comfort zone

 

What type of guage is this on? OEM? Autometer true pressure or electric? Could be something as simple as a sending unit. Get ahold of a true pressure gage and screw it in the back of the block and check readings. If they are low still then you likely have work oil pump or rod/main bearings getting loose.

 

Figures it hadd to be a y8block lol.. The oil gallys in them blocks suckk.. They like to throw roads becarefull.

 

like homie said, might be a bad oil pump or a spun bearing.