Oil Pressure gauge doesn't go up!!!!

[ny180sx]

I installed Autometer electric oil pressure gauge on my KA24E. I bought BSPT to NPT Adapter from local racing equipment shop and installed it properly. When I start engine the gauge indicates little bit below the zero, and when I accelerates it goes up around zero. I used 18 gauge wire to connect sender and gauge. I can't find the problem. Does anyone have same problem?? I'd appreciate your help...

[old_s13]

If you had no oil pressure you'de hear your lifters, thats for sure. Maybe the sending unit is suspect. Or, its getting insufficient reading due to that adaptor. I personally stay away from ALL adaptors and instead, re-tapped my oil filter mounting block with new proper threads. Its the right way.

- Mike