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Old 11-09-2018, 01:42 AM   #1
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Default Warning Buzzer

2006 1800MX Mercruiser 3.0

While on the water, (engine off for about 3 hours) I started the Engine and the warning buzzer did not turn off. (always makes noise when the key is turned)

after I got underway the buzzer stopped

I got to another place and it was shut off for about a hour and the same thing happened.

When I got home and flushed the motor, it shut right off when I started it. (normal)

Anyone have a idea what it may be?
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Old 11-09-2018, 03:48 AM   #2
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The buzzer is controlled by water temp (too high), oil pressure (to low) and OD oil level (to low oil level), the OD oil bottle has a switch inside the bottle.
Start by cking the OD oil bottle as that is the easy one.
Sence it did not sound off at home I would ck the temp switch.
Did you ck all gauges when it happened?
Don
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Old 11-09-2018, 04:36 AM   #3
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Spot on, it was the OD fluid a little low. didn't realize it had a sensor.
I checked the outside of the OD, I don't see anything leaking.
Any place else I should check? I assume it should not leak or be low?
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Old 11-09-2018, 06:28 AM   #4
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Quote:
Originally Posted by tech62571 View Post
Spot on, it was the OD fluid a little low. didn't realize it had a sensor.
I checked the outside of the OD, I don't see anything leaking.
Any place else I should check? I assume it should not leak or be low?
This is what I would have thought. At rest and getting onto plane in the water the bow is slightly higher so the reservoir float ends up being a little lower, once on plane it levels out. On the trailer itís fairly level.

When was the lube last changed? Common for the level to drop with in a month as some air gets into the system. Any signs of lube in the bilge? Leaks can occur at the transom fitting. When the lube is changed look for signs of water in it which would indicate a bad seal. Weíre need gaskets used on the drain and vent plug when the lube was changed?
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Old 11-09-2018, 08:38 AM   #5
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I 2nd what Mike said.
Don
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Old 11-09-2018, 07:24 PM   #6
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Thank you

Lube Oil was changed last December.
not sure if new gaskets were used. but i pulled the bottom one quickly in may to make sure there was no water in it.
I will have to check at the transom fitting.
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Old 11-12-2018, 06:48 PM   #7
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Hose connections were dry, nothing appears to be leaking
is there a common place they might leak?
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Old 11-13-2018, 01:23 AM   #8
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Quote:
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Hose connections were dry, nothing appears to be leaking
is there a common place they might leak?
Internally right at the transom inner plate. External prop shaft, drain/vent plugs, shift shaft, upper drive shaft.
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Old Yesterday, 02:03 AM   #9
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Thank you!
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