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Tony B
Guru
- Joined
- Jul 18, 2011
- Messages
- 1,251
- Location
- Cruising/Live-Aboard USA
- Vessel Name
- Serenity
- Vessel Make
- Mainship 36 Dual Cabin -1986
Losing Oil Pressure
- Thread starter Tony B
- Start date
The friendliest place on the web for anyone who enjoys boating.
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
grahamdouglass
Senior Member
- Joined
- Nov 29, 2012
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- Canada
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- Summer Wind 1
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- Marine Trader 41
I had a similar problem the first year I owned my boat. In my case the oil pressure would go to 0. I eventually got rid of my Stewart Warner oil gauges and sender and went with Faria. The cost was half that of replacing my Stewart Warner gauges and I have had no problem since.
OP
OP
Tony B
Guru
- Joined
- Jul 18, 2011
- Messages
- 1,251
- Location
- Cruising/Live-Aboard USA
- Vessel Name
- Serenity
- Vessel Make
- Mainship 36 Dual Cabin -1986
Happy Ending
Yesterday, I installed a mechanical oil pressure gauge. Started the engine at 60 PSI, then slowly drifted down to 55. I ran the engine for an hour at the dock at 1800 RPM in reverse gear for a load. Guess what? Nothing happened, the engine just sat there steady at 55 PSI. Great news, I can now sleep better and plan my trip southward next week. I will leave the mechanical gauge in place and use it. Although I only drive from the fly bridge, I make engine room checks about every 45 mins to an hour and the alarm buzzer thingie is hooked up so I am not worried about a real live oil drop.
So now I know that the problem is not the "T", nor the alarm sender nor the pressure gauge sender. There are only two things left (Ithink), either the gauge is defective or there is some sort of wiring conflict. I will put the sender wire from the good engine (port) and put it on the suspect engine's (starboard) gauge and that will tell me if the gauge is defective.
Anyway, now I can sleep tonight.
Thanks for all the help. I really learned a lot.
Yesterday, I installed a mechanical oil pressure gauge. Started the engine at 60 PSI, then slowly drifted down to 55. I ran the engine for an hour at the dock at 1800 RPM in reverse gear for a load. Guess what? Nothing happened, the engine just sat there steady at 55 PSI. Great news, I can now sleep better and plan my trip southward next week. I will leave the mechanical gauge in place and use it. Although I only drive from the fly bridge, I make engine room checks about every 45 mins to an hour and the alarm buzzer thingie is hooked up so I am not worried about a real live oil drop.
So now I know that the problem is not the "T", nor the alarm sender nor the pressure gauge sender. There are only two things left (Ithink), either the gauge is defective or there is some sort of wiring conflict. I will put the sender wire from the good engine (port) and put it on the suspect engine's (starboard) gauge and that will tell me if the gauge is defective.
Anyway, now I can sleep tonight.
Thanks for all the help. I really learned a lot.
