Oil pressure conundrum (1 Viewer)

[TotallynewtoBJ42]

1979 Canadian 24volt BJ40 with 3B engine. No oil pressure on the gauge. Grounding the wire leading to the sender causes the gauge to max out. Removed the old sender and installed new 24volt sender. Still no reading on the gauge. By the way the old sender was marked 12 volt.

 

[AussieHJCruza]

Verify the pressure with a mechanical gauge. If there's pressure then time to troubleshoot the factory gauge/sender setup.
If there's no pressure then there's bigger problems.

 

[45Dougal]

1979 Canadian 24volt BJ40 with 3B engine. No oil pressure on the gauge. Grounding the wire leading to the sender causes the gauge to max out. Removed the old sender and installed new 24volt sender. Still no reading on the gauge. By the way the old sender was marked 12 volt.

Does the engine block have a good ground?