[Healeys] oscillatiing/chattering oil pressure gauge

[David Masucci]

My BJ8 has always had typical oil pressure and still does. The engine runs 
great and makes no bad noises. But all of a sudden the oil gauge is 
oscillating a lot! It will chatter over a 20-30 pound range when the engine 
is at 2500 RPM or so. Even at idle it's chattering back and forth. I've seen 
similar things before when there's air in the oil line, but this is a lot 
worse.

The engine seems fine...I hope. What could do this? Can the relief valve do 
this?

Thanks,
Dave

BJ8