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Post by finatic on Mar 18, 2023 11:08:05 GMT -5
The boat has been sitting since October. I started them up today and surprised my starboard side is showing a low oil pressure indicator display. Has anyone come across this. My feeling is its the gauge and not the motor itself. Any thoughts ?
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jerryk
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Post by jerryk on Mar 18, 2023 11:14:14 GMT -5
I would look into the pressure sending unit first (well, after you confirm there is oil in the engine). If communication to the command link network is working for other functions I kind of doubt the gauge is doing anything wrong. If other gauge items seem wonky then look at the network connections and gauge itself.
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Post by fishnfool on Mar 18, 2023 11:18:21 GMT -5
My low oil pressure alarm will sometimes come on on first start up after I changed my oil and until everything gets circulating. I'd let it run for a minute, shut the motor off and restart and it would be cleared. If you changed your oil last fall before layup I suspect that's the cause. I bet if you "pull start" it again on muffs it will go away. Don't forget to video. Check your oil level while yer at it!
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Post by finatic on Mar 18, 2023 11:52:46 GMT -5
Yep, fresh oil here's another thought one battery was on its way out. That battery just about started that motor. Could that have anything to do with the warning low voltage.
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Post by fishnfool on Mar 18, 2023 12:05:38 GMT -5
No don't think low voltage effects Yammies like it does Mercs by causing all sorts of alarms. I've had dying batteries/low voltage many times never had a low oil pressure warning from it. Only after changing my oil on first start up.
Go start it up again, bet it's gone assuming you let it run a bit last time the alarm came on?
Im in the middle of changing my oils now...
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jerryk
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When not online I'm likely on Knot Online
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Post by jerryk on Mar 18, 2023 12:38:27 GMT -5
I disagree...battery voltage can cause the issue. I kept getting high temp alarms before I replaced my batteries. Replace the battery if it needs it first, then look into the motor if problems persist.
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Post by fishnfool on Mar 18, 2023 13:02:06 GMT -5
I disagree...battery voltage can cause the issue. I kept getting high temp alarms before I replaced my batteries. Replace the battery if it needs it first, then look into the motor if problems persist. My point is Yamaha F150s are pretty low voltage tolerant and not known for throwing random alarms under low voltage conditions unlike Mercs where even the slightest voltage drop below optimal will trigger an alarm. I've never run into a situation in over 1k hrs where my starting battery low voltage triggered a low oil pressure alarm. Not saying it is impossible but unlikely esp if the battery is still turning the engine over. This is a very common alarm after an oil change until the oil has had a chance to circulate through the filter etc. Considering it appears to be the first start coming off a fresh oil change I still bet soup to nuts that was the reason. The simple check is to go out, turn the key, let it prime and restart to see if the code is still there - after checking the oil level of course.
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jerryk
Captain
When not online I'm likely on Knot Online
Posts: 600
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Post by jerryk on Mar 18, 2023 13:20:05 GMT -5
Fair comments. But my F200 (just one side) was throwing random alarms for hot using a battery that also started it just fine. Like peeling an onion you have to eliminate what you know and go the next layer down. But hey, if you need a battery anyway, get it in there before doing much else. If it's possible to restart and verify all is good with oil pressure, that's wonderful but you don't want to wonder about oil pressure later after you leave the dock if it was really caused by a bad battery that you knew about but didn't fix.
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Post by finatic on Mar 18, 2023 13:32:01 GMT -5
I took the batteries out of the boat. Their in my truck to give as a core return. I'm going to get a set of intestate marine group 31 batteries from work. They deal with them for the oil trucks I think I can get a very good price.
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Post by schlnrnd on Mar 19, 2023 20:55:40 GMT -5
Swap the network cables on the gauges. If the good one shows the same message then issue is found
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Post by finatic on Apr 2, 2023 6:53:46 GMT -5
My low oil pressure alarm will sometimes come on on first start up after I changed my oil and until everything gets circulating. I'd let it run for a minute, shut the motor off and restart and it would be cleared. If you changed your oil last fall before layup I suspect that's the cause. I bet if you "pull start" it again on muffs it will go away. Don't forget to video. Check your oil level while yer at it! Yes sir, started the motors yesterday and the low pressure alarm was gone. Over the years that has never happened all is good.
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Post by fishnfool on Apr 2, 2023 6:56:10 GMT -5
My low oil pressure alarm will sometimes come on on first start up after I changed my oil and until everything gets circulating. I'd let it run for a minute, shut the motor off and restart and it would be cleared. If you changed your oil last fall before layup I suspect that's the cause. I bet if you "pull start" it again on muffs it will go away. Don't forget to video. Check your oil level while yer at it! Yes sir, started the motors yesterday and the low pressure alarm was gone. Over the years that has never happened all is good. Hey shouldn't you be cleaning the house and not posting on here?! I'm gonna tell!
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Post by finatic on Apr 2, 2023 11:25:13 GMT -5
I have to be careful what I wish for. No hot 30 year old to clean the house now I'm the bitch cleaning the house. Lmao
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jerryk
Captain
When not online I'm likely on Knot Online
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Post by jerryk on Apr 14, 2023 16:35:13 GMT -5
Yes sir, started the motors yesterday and the low pressure alarm was gone. Over the years that has never happened all is good. So as a final follow up on this, do you think the alarms went away because it was caused by an air bubble in the oil system following the oil change, or did you also replace the batteries before starting leaving a possibility that a low voltage condition might have been the root cause? I agree that if you did a recent oil change that would be my first thought, but after I change oil I always restart the motor to circulate all the fresh oil before shutting down for the end of the season (always change oil BEFORE storage for that reason--never store motor with old contaminated oil, bathe it in good clean oil before you shut it down)...and if you did the same routine I still wonder if the battery was the cause.
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Post by finatic on Apr 14, 2023 18:00:33 GMT -5
My guess it was from the batteries being just about dead. Or it could be from the oil change. To be honest I really have no effing clue. But I'm happy it's gone.
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