1998 Audi A4 4 cyl All Wheel Drive Automatic
Recently I had the motor rebuilt, everything is new including the oil pump but not the crankshaft (it was polished). Since putting the rebuilt motor in I have been experiencing very low oil pressure readings when warm. (At cold idle I get 60-70 psi and at warm idle I get 6-8 psi) At this point I have changed the bearings to check them for wear and also for the possibility that they may have been the wrong bearings (main caps only). This did not correct the issue. There are no external leaks. I have changed the oil filter, experimented with various oil viscosities, but have not found a correction. Would it be possible that the oil pump may be the issue, I primed it when I installed it but didn't get to start it until a week later, could it have lost its prime? And could the relief valve and pump drive gears in the oil pump be the issue? Thanks
have the same problem?
Saturday, June 14th, 2008 AT 1:19 PM