I have a 95 ram 1500 with the 5.9 360. I recently spent the a week straight rebuilding the engine sue to collapsed oil control rings. I did everything right and also replaced the oil pump and pressure sending unit. And pick up tube. I was setting the timing, which has proven to be very difficult as a cant seem to get the distributor turned far enough due to the cap screw hitting the intake, when out of nowhere i lost all oil pressure at idle. It does the typical dodge thong and builds pressure when revving it but even on a mechanical gauge i still have no pressure once it reaches temp. The oil pump functions properly and was primed before installation, and the pressure sending unit is not really an issue as i will be completely installing the mechanical gauge as soon as the problem is solved. But i am completely lost as to why i still have no pressure at idle after i reach operating temperature. It currently has 10w30 in it. I was debating on dumping it and using straight 30 to see if that would correct the issue. All my bearing clearances are within specification so i do not believe that is my issue. Does anyone have any ideas on what i am possibly not seeing?

 

You don't set timing by turning distributo on these. That sets fuel synch. Also, if oil pressure is low, I would suspect main and rod bearing clearances.

 

That explains why it stalls out when i turn the number one plug past cylinder eight. The rods and mains are within spec for clearance.

 

You can download service manual HERE. Oil pressure has t be losing somewhere...

 

Cam bearings?

 

After you get your oil pressure issues figured out, you are going to need to take it to a shop to get the fuel sync set properly with the right scanner.

Not that it makes a huge difference, but what kind of oil pump was it?

 

I bought it at my local carquest auto parts store. I have been going to them for years and they have always hrlped me out. I was thinking cam bearings my self but when i had everything out i had them looked at by a good friend of mine at ocean state performance my local speed shop and he said they looked exceptional for 210k miles so i left them alone. Luckily i can set the fuel synch myself at work sine we have the right scanners.