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post #1 of 7 Old 08-09-2010 Thread Starter
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High oil pressure

2qm15 Rwc Engine.

I Am A New Owner To This Boat. The Oil Pressure Is About 75psi And Only Drops Slightly When Warm. Specs Are About 42psi.

I Put A Manual Gauge Then Replaced The Oil Sending Unit And Both Are Similar.

Is This A Problem?

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Kevin
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post #2 of 7 Old 08-09-2010
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That sounds pretty high. My QM15 goes up to about 75 when it first starts, once warm it drops to about 50. Does your oil pressure vary with the RPM or is it constant? If everything is running fine and not leaking oil I probably would just do an oil change and make sure you put the proper weight oil back in and see what it does.
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post #3 of 7 Old 08-09-2010
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And be careful not to put too much oil in.

Brian
Living aboard in Victoria Harbour
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post #4 of 7 Old 08-09-2010
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Is your new sending unit compatible with your old gauge and is the new sender a single sending unit and not dual

1955 Blanchard 51 Custom ( I got a woody )

Lord, give me coffee to change the things I can change and Rum to accept the things I can't
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post #5 of 7 Old 08-09-2010 Thread Starter
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High Oil Pressure

My Oil Gauge Is 0 - 80 And The Sending Unit Is 0- 100.

But I Did Put A Mechanical Gauge On The Block And It Is Reading About The Same.

How Can I Match Up A Gauge And A Sending Unit Properly?

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post #6 of 7 Old 08-10-2010
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Tell your marine exchange which gauge(s) you have and they'll be able to tell you what is compatible; I'm pretty sure that SW & Teleflex use the same sender ( ie: teleflex and Sierra senders) and a VDO will not work. I'm also pretty sure if you have a 0-80 gauge you'll need a 0-80 sender, also make sure it's a single station sender, unless you have a low pressure shut off on the engine in addition to a OP gauge or gauges in two locations.

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Lord, give me coffee to change the things I can change and Rum to accept the things I can't
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post #7 of 7 Old 08-10-2010
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Something else you could look into is the pressure relief valve ( it's should be close to the oil pump ) if it's stuck closed it will show a high reading, but I would look there last, unless you're oozing oil

1955 Blanchard 51 Custom ( I got a woody )

Lord, give me coffee to change the things I can change and Rum to accept the things I can't
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