hi I have a quick question I got a b20b with a GSR head the block I bought it at JDM Depot I got the block rebuilt and the head is rebuilt as well I put basically everything new on the swap and I'm having problems with my oil pressure light it comes on and off and I changed the oil pressure sensor and it still doing the same thing and it has a new oil pump and I got the check engine light on because of that I'm going crazy I don't know what to do can somebody help me

 

Low oil pressure could be caused by a few things. Being that you had the motor assembled recently you might want to check your bearings to make sure clearances are correct. Also if you put the head on, not sure if you noticed but there's a o-ring that goes on the deck of the block that is used for oil pressure. One time a friend and I rebuilt a motor, forgot the o-ring or it fell out and we had low oil pressure issues during a tune. We realized once we took the head off that the o-ring was missing.