Oil Pressure

[Todd Ingraham]

I have 2000 210 SeRay Sundeck with a 305 Mercruiser, what is the norm for oil PSI reading on the panel gauge at crusing speed?

 

[Lazy Daze]

What are the numbers you see (cold and hot) at idle and various RPM's?

 

[Todd Ingraham]

I'm getting a 60PSI at about 3200 RPM's

 

[Lazy Daze]

Is that hot or cold?

 

[Todd Ingraham]

hot

 

[Lazy Daze]

Ok, so although that's higher than some, it's nowhere near out of the ordinary. I absolutely wouldn't be concerned about it. Unless you're saying it has changed recently. Gauges can be off, too - plumb a known, good gauge directly into the block if you want to find out the "real" pressure. But 60 is totally fine (although I say this without knowing the history and very limited info given).

 

[Todd Ingraham]

The reason I asked is that the boat is new to me and I was sure when I took it out a week ago that running hot it was at 40PSI at cruz speed, getting older and just could not remember for sure.

Thank you

 

[Lazy Daze]

OK. Monitor it. See if it continues to change. It could a flaky sensor or gauge. Check it as I mentioned above if you want to be sure. Gauges can be checked, too - but you'll need to take it to a shop with those tools (kind of a specialty tool).

 

[techmitch]

OK. Monitor it. See if it continues to change. It could a flaky sensor or gauge. Check it as I mentioned above if you want to be sure. Gauges can be checked, too - but you'll need to take it to a shop with those tools (kind of a specialty tool).

It's really not that special and quite inexpensive.

https://www.mile-x.com/otc-3385-universal-gauge-and-component-tester/

 

[Todd320]

I was just out this weekend, and oil pressure was 63.2 and 63.0 psi at about 3850 rpm. I have twin 350 mag horizon Mpi.

 

[Lazy Daze]

It's really not that special and quite inexpensive.

https://www.mile-x.com/otc-3385-universal-gauge-and-component-tester/

"Special" in that it's probably not something that the average boater, let alone the average DIY'r has on hand. For some, $200 might be hard to swallow for a one time use or a "curiosity" check. Good tool, though, none-the-less.

 

[techmitch]

"Special" in that it's probably not something that the average boater, let alone the average DIY'r has on hand. For some, $200 might be hard to swallow for a one time use or a "curiosity" check. Good tool, though, none-the-less.

You're probably right. I've had mine since about the late 70"s/early 80's (same model) and I' almost positive it was about $69.00 back then.
I will say, being a boat owner, even if I wasn't a technician, I would buy one in a heartbeat as it is a very useful tool and has many other applications.