Lost oil pressure

the gauge may be bad , you need to hook one up direct , if the gauge dropped and the motor was o.k. then it's probably the gauge , but don't take the chance hook one up, remove the coil wire and crank it over see if you have oil pressure , you don't want it to start if the oil pump is bad

CHECK FOR OIL LEAKS. CAUSE FOR LOW OIL PRESSURE. HIGH OIL PRESSURE IS 60 PSI. LOW IS 20 PSI.