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Author Topic: Proper oil pressure?  (Read 660 times)
186CAP
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Boat: 1989 Rinker Captiva 186
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« on: September 02, 2009, 09:53:05 AM »
I have a 4.3 liter Merc. Alpha One.  This is the first summer for running this boat.  I noticed that my oil pressure gauge is running about 60 PSI the last two times out.  I thought (but was not positive) that the PSI had been at 40 PSI for the first part of summer.  Does anyone know what the correct PSI should be for this engine?  If 40 is correct what would cause the pressure to be higher?  I checked the oil and it is within the correct amount.
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Babyboomer
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Location: Louisville Ky./Byrdstown Tn.
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« Reply #1 on: September 02, 2009, 11:15:58 AM »
This forum address the subject
http://forums.iboats.com/showthread.php?t=247617

Another One
http://www.boatingabc.com/forums/ubbthreads.php/topics/466554/Mercruiser_Oil_Pressure.html
« Last Edit: September 02, 2009, 11:19:11 AM by Babyboomer » Logged

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alswagg
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« Reply #2 on: September 02, 2009, 02:45:02 PM »
cold oil the pressure will be higher,  hot oil the pressure is lower.   40 lbs is great pressure, 60 is fine also.   10 is not.   Allan
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186CAP
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« Reply #3 on: September 03, 2009, 09:30:02 AM »
Thanks for the info.  I feel better.
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jfdeng5
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« Reply #4 on: September 03, 2009, 06:16:46 PM »
All of the boats I have had ran around 40 at an idle and around 60 on plane.  Hope this helps.
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186CAP
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Location: Indiana
Boat: 1989 Rinker Captiva 186
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« Reply #5 on: September 04, 2009, 03:53:38 PM »
yes, thank you.
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