from the top of the motor is probably a faulty or bad valve cover gasket Could be the oil pressure sensor, it is located next to the distributor.
No. The diaphragm on the pressure gauge is leaking, and the gauge will soon be inoperative. Have the extinguisher serviced and repaired.
Low oil, no oil pressure, bad sending unit, wiring, bad gauge,.............
The oil pressure could be dropping. Or, the sending unit could be going bad or have loose wiring. Check the wiring and the sending unit. It will take an oil pressure gauge to check that the pressure is correct.
You will need to run an oil pressure test with a pressure gauge.
Check with manual gauge - if pressure normal - could be defevtive oil pressure sensor or gauge
2 times the pressure at which the safety valve is set.
A pressure gauge indicates actual pressure and a differential pressure gauge indicates the difference in pressure.
Check the oil level to make sure that it is full. The oil filter could be clogged, the oil pump could not be working properly, the oil pressure sending unit could be bad, or there is an internal engine failure.
Because Pressure gauge measures the the differenceof pressure so it is called pressure gauge not meter.
You probably could A) replace the gauge or B) take it to a dealership and have them look at it
A compound gauge is a pressure gauge that displays both negative and positive gauge pressure measurements. Gauge pressure is a measurement of pressure relative to ambient pressure. For example, if ambient pressure was 14.7 PSI and you were to measure absolute vaccum using a compound gauge, the gauge would indicate -14.7 PSI.
No, low coolant would cause the opposite.