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Low Oil Pressure-AD31B in the Tropics

Discussion Forum at MarineEngine.com » Volvo Penta Diesel » Archive through December 27, 2007 » Low Oil Pressure-AD31B in the Tropics « Previous Next »

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Kurt Carlson
New member
Username: hookipa

Post Number: 1
Registered: 10-2007
Posted on Wednesday, October 24, 2007 - 04:08 pm:   Edit Post Delete Post View Post/Check IP

I recently moved my boat from New Zealand to Tonga. I am now experiencing low oil pressure at idle after reaching operating temperature. Since I have dual ciruits for oil pressure, light and gauge, I believe the pressure is truely low. I have replaced the oil with 15w-40 and it still does not take long for the pressure to drop. I do get about 50 psi at about 2000 rpm when hot. Any thoughts before I pull the boat and motor to check the main bearings? Thanks, Kurt
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DickV
Visitor
Posted on Thursday, October 25, 2007 - 08:20 am:   Edit Post Delete Post View Post/Check IP

Check it with a mechanical gauge. Remove and check relief valves and seats in oil filter housing.Also check that oil line to valve bridge has not broken.

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