Question: Oil Pressure Gauge:

[401KVet]

The needle on my oil pressure gauge sometimes jumps, jiggles, etc. mostly when idling. Not all of the time, just some time. Just recently the same started on my C-10.
What is most common? A problem with the gauge, the sending unit, or something else?? Thanks,

 

[paz72vette]

You might have air in the lines, junk from engine, teflon tape from the fittings in lines.

 

[6880 Mike]

Sending unit could be failing. Wire could be loose or a dirty connection.

 

[damoroso]

That's an electric gauge, and sending unit, clean the connection first, they tend to get dirty where they are.