low oil pressure on Isuzu 4JB1 motor.

[dogfishlake]

I just changed the oil (rotella t, mustang oem filter) in my 2060 with the isuzu diesel, ran great before, no oil light. Now it fires right up, light goes out and about 30 seconds later it comes back on. Shut it down right away, no rattling. Tried it again today and same thing. I did notice when I changed the oil that it took forever to fill, like it wouldn't drain back down from the head fast enough. This morning I pulled the valve cover expecting to find it full of sludge but it looked brand new. I'm suspecting the pickup is getting starved but can't see why, or maybe a bad oem filter, maybe the sender. If anyone has seen this before I'd love to hear from you or hear your theories. Thanks!

 

[Tazza]

I would start by installing a pressure gague into the sender port. Make sure the pressure is ok, if its low you risk engine damage.
Hopefully its just a sender issue, cheap and easy to fix.

 

[dogfishlake]

I would start by installing a pressure gague into the sender port. Make sure the pressure is ok, if its low you risk engine damage.
Hopefully its just a sender issue, cheap and easy to fix.

Well, got a mechanical guage and it makes 75psi. Problem solved. thanks.