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Old 01-21-2023, 07:44 AM   #1
Lt. JG
 
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Default Warning signal

I haven't used my boat this Australian summer.
I had a new carburettor put through it in the winter.
I have started it regularly and run it until it gets up to temp with earmuffs on. Never any problems.
Today while I was running it, getting it ready for a public holiday, it running beautifully.
To my surprise " a warning noise come on" I had never heard this before and I shut it down straight away.
I waited a while and started it again, all the gauges look normal, although the boat wasn't up to temp. Approximately half tempt.
I can't find anything in the manual about the warning signal.
But I found one thread about a over heating problem at idle.

Any thoughts would be appreciated.

Regards
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Old 01-21-2023, 09:31 AM   #2
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I just found another thread, where I think it says " Hydraulic fluid could be low"

The reservoir was defiantly low, and I didn't bother to top it because I was just warming it up on the trailer.

I will check it out tomorrow, and report back.

Thanks in advance.
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Old 01-21-2023, 01:31 PM   #3
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It would help to know what year and engine you have but yes low gear lube is the most likely issue.
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Old 01-22-2023, 05:12 AM   #4
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Ok Update as promised. Issue fixed.

My boat is a 1993 2200SC. The engine is a 5.7 ltr Chevy. Although I put a new long block in 3 years ago.

The first thing I did this morning is top up the power steering fluid.
Hooked up the ear muffs and started it up.
Warning signal straight away. I shut it down.
I left the ignition on and the warning signal came straight back on. It had me thinking it most likely isn't mechanical.

Yesterday I hooked up two leads that looked like they went on the auto choke.
I took them off, and I have run it twice today up to operating temperature.

Looking forward to giving it a run with the new carby kit in.

Thanks for your input.
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Old 01-22-2023, 12:59 PM   #5
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For your model year there are three things on the alarm circuit; low gear lube, low oil pressure and high coolant temperature. Note the alarm uses separate sensors than the engine gauges do. Go to Documents and find the Mercruiser engine manual for your engine and review the wiring diagram including choke.
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Old 01-23-2023, 02:53 PM   #6
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I've never heard of an alarm on the Hydraulic Fluid. I have heard of an alarm on the gear lube levels on outdrives. The only hydraulics would be for the drive trim or bennet trim tabs. Neither has an alarm to my knowledge.
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