Diagnosing audible alarm

[Chap260sig]

Hello all I'm new to the forum thing but have a question. I have a1998 mercruiser 7.4 liter 454 with a bravo 3. Engine serial number is 0L085239. I have an alarm sounding when I start the engine, it continues and doesn't turn off. According to my guages and a visual inspection everything seems good. I've been doing a lil poking around and found water in my gas. Will that make the alarm sound or do u think I have something else going on. This happened in May when I put it in the water and I'm just getting around to looking at it. ( Been a long busy summer lol). Anyway any help or insight will be greatly appreciated. Thanx

 

[scoflaw]

Solid alarm can be low oil pressure, overheat, or low drive fluid.
horn beeping on and off is low voltage to a sensor

 

[Chap260sig]

Thank you. Would bad or dirty connection at sensor cause this. will the alarm only sound for those three things?? As I stated I found water in the fuel so working on that as well.

 

[Chap260sig]

Ok guys so I think I chased down my sensor problem. Thanks for the advice. I now have another problem entirely different. I took the boat for a test drive and it wouldnt get up past 2700 rpms. It wouldn't get out of it's own way and I couldn't get it to plane off. In nuetral it will go up to 4000 rpms no problem as soon as it has a load 2700 is the max. It idles fine doesn't seem to be missing or sputtering. I don't even know where to start with this. Oh I did replace the water fuel separator yesterday. Any help will be greatly appreciated.

 

[achris]

Still thread seems to be carried on in another topic...

https://forums.iboats.com/forum/eng...outdrives/10644067-loss-of-power-in-rpm-range

So this thread is closed to avoid confusion.

Chris....
iboats mod team.