Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-17-2017, 09:30 AM   #1
Lt. JG
 
Join Date: Jan 2017
Posts: 20
Default Oil alarm going off

Had my 1997 3200 SCR delivered last Thursday and was planning on heading out Sunday. After starting up the engines after 3 or 4 minutes the Alarm started to go off. I checked all of the engine/gear lube oil levels and all were fine

Did a re start and same thing happened--shut her down again.

My friend suggested I start one engine at a time to see the culprit--I did so and never heard the alarm again--so off we go.

Went back out yesterday and alarm came back on--did the one start at a time and it only happens on the starboard engine. I also noticed that on Sunday when it ran--without the alarm going off the oil pressure was fine but when the alarm was going off--the oil pressure was low.

Could this be a faulty gauge?
Or a faulty sensor??

Note--At Sea Trial there were no issues with alarms.

Your advice is greatly appreciated!!
__________________

Murdog is offline   Reply With Quote
Old 05-17-2017, 10:33 AM   #2
Commander
 
Join Date: Sep 2015
Location: Chesapeake, VA
Posts: 427
Default

If the gage is low and alarm is going off, have to think something is wrong. What does the gage say? How many hours on the engine and what oil was put in them?
__________________

speedysprocket is offline   Reply With Quote
Old 05-17-2017, 11:30 AM   #3
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Perry Hall, Maryland
Posts: 5,403
Default

The alarm uses a oil pressure switch and the gauge an oil pressure sensor so if both are indicating an issue it is probably real. If you increase the rpms when the fault is occurring does the oil pressure increase? The engines oil pump has a built in pressure relief that may be faulty, however to fix the engine needs to come out.

You can install a mechanical gauge to get a third measurement.

Hate to say it but by removing one wire the alarm would not sound so if the sell was that type of person he may have pulled on over on you.
__________________
Mike
mmwjr is offline   Reply With Quote
Old 05-17-2017, 04:26 PM   #4
Lt. JG
 
Join Date: Jan 2017
Posts: 20
Default Oil Alarm

I just had my sales broker tell me that it could possibly be the oil pressure sending unit/sensor unit.

Does that make sense?

To answer the other questions that have been asked I have not been out to the boat again since last night
Murdog is offline   Reply With Quote
Old 05-17-2017, 04:34 PM   #5
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Perry Hall, Maryland
Posts: 5,403
Default

Quote:
Originally Posted by Murdog View Post
I just had my sales broker tell me that it could possibly be the oil pressure sending unit/sensor unit.

Does that make sense?

To answer the other questions that have been asked I have not been out to the boat again since last night
As I stated the alarm sensor is a switch and the helm gauge has a separate sensor. if both are indicating a problem it is probably real. I guess both could be bad but that would be rare and for both to fault at the same time even more rare.
__________________
Mike
mmwjr is offline   Reply With Quote
Old 05-17-2017, 04:36 PM   #6
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Perry Hall, Maryland
Posts: 5,403
Default

When you were out last and it was fine what rpm range were you at verses when it was bad?
__________________
Mike
mmwjr is offline   Reply With Quote
Old 05-17-2017, 10:34 PM   #7
Lt. Commander
 
donald's Avatar
 
Join Date: Jun 2016
Location: N.Calif.
Posts: 146
Default

What are you calling low oil pressure???
Did it drop to 0?
A cold engine will have a higher oil pressure than a warm one!!
What engine, drive do you have?
Would help to know so we can help you better!
Don
__________________
1995 Maxum 2400 SCR 5.7 A1 G2 LUNA DE MIEL
1988 Bayliner 2455 5.0 IO (sold)
1987 Seaswerl 18ft C. Cabin 4.3 IO(lost in fire)
1976 16ft. Tahiti 2.5 IO (sold)
donald is offline   Reply With Quote
Old 05-22-2017, 01:00 AM   #8
Lt. JG
 
Join Date: Jan 2017
Posts: 20
Default

Sorry it took so long to respond--I have been to the marina 3 times since my alarm went off and all 3 times I have started tebost and no alarm goes off and Oil pressure and temp are good.

What do you guys make of that??

5.7 Mercruisers

Thanks
Murdog is offline   Reply With Quote
Old 05-22-2017, 01:03 AM   #9
Lt. JG
 
Join Date: Jan 2017
Posts: 20
Default

Sorry it took so long to respond--I have been to the marina 3 times since my alarm went off and all 3 times I have started the boat and no alarm goes off and Oil pressure and temp are good.

What do you guys make of that??

5.7 Mercruisers

Thanks
Murdog is offline   Reply With Quote
Old 05-22-2017, 01:09 AM   #10
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Perry Hall, Maryland
Posts: 5,403
Default

Did you just start it in the slip or take it for a ride? Did you let the engine get to normal operating temp, fully warmed up?
__________________

__________________
Mike
mmwjr is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 09:07 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.