Just got a call from @cruiserinsanity regarding unusual oil pressure readings with the stock gauge on a 3FE. At idle the gauge is reading about 1/3 on the gauge, while at elevated rpm the needle is resting just above the lowest mark. This is opposite of how the gauge should be functioning which is a lower reading at idle and increased pressure at higher rpm.
While on the phone he looked over the engine. Oil volume is reading on the dipstick, no oil leakage at the sending unit, nor at the oil filter, plus there are no major oil leaks. Also pressure is not dependent upon volume until the amount of oil drops below 2 qts or so allowing the oil pickup to suck air. Then oil pressure will drop.
At the moment we think that the issue is a bad gauge, wiring, or sending unit.
Any input?
While on the phone he looked over the engine. Oil volume is reading on the dipstick, no oil leakage at the sending unit, nor at the oil filter, plus there are no major oil leaks. Also pressure is not dependent upon volume until the amount of oil drops below 2 qts or so allowing the oil pickup to suck air. Then oil pressure will drop.
At the moment we think that the issue is a bad gauge, wiring, or sending unit.
Any input?