CaptRonn
Well-Known Member
- May 25, 2016
- 1,550
- Boat Info
- 1999 Sea Ray 400 Sedan Bridge
- Engines
- Convert fuel into noise
Using jumper wires to switch the gauges would work. Since the gauge went to 80 psi when you grounded the sender wire the gauge is most likely working correctly. Corrosion on the sender terminal could affect the reading but if its still reading 20 psi after cleaning the terminals I'm guessing the problem is not the gauge.
Correct. Senders do go bad. Corrosion on sender terminals will create problems.
Shark has 5.0's, and just a quick google search had this:
Mercruiser 5.0L Marine Engine Specifications
Models 5.0L 5.0L EFI
Maximum rpm @ WOT3 4400-4800 rpm
Idle rpm in NEUTRAL3 650 rpm5 600 rpm6
Oil Pressure @ 2000 rpm 30-60 psi (207-414 kPa)
Min. Oil Pressure @ Idle 4 psi (28 kPa)