Its BEEPING at me

Hello everyone, I recently inherited a 1991 Evinrude 175 attached to a 1991 Champion. After bringing it home I git it running and found the fuel rail o-rings going into the carbs were leaking and replaced them. With everything looking ok I guessed it was time to run it down to the neighborhood lake and dropped it in. Got their and got it put in and started and just set the throttle to "No Wake" mode and started putting around. About 10 mins into the ride this beeping is going off like on for a second off for a second. Turn boat off and back on and no alarm, looked at "Code book sticker" and theirs not really a on for a sec off for a sec. So, i said heck with it and motored on and about 5 mins later it started going off again. Now looking at that chart it says something about fuel restriction and oil restriction. Well it was smoking good so I figured oil was good so it must be fuel. Decided to crack the throttle open and off it took, about a min later the alarm quit. Wow, solved another problem I thought, not so much because about 3 mins later the boat starts to die down (losing speed with throttle at 3/4) and then dies. Turned off and back on and it starts right up. Putted back to the dock, alarm kicks back on and trailer it back up. Now the alarm got quicker the more speed I gained too. Anyway sorry to ramble on but was looking for some pointers on places or quick checks that i might do before having to take it into the dealer. Also it still has the VRO system working.
oh yeah...
1991 Champion
TSB16885L091
Evinrude 175 Intruder
Model# E175GLEIS
Serial# G02628534
Outboard Marine Corp
U.S.A.
Outboard Marine Corp
U.S.A.

We need the engine model number please.
The alarms are telling you there is a problem. Low oil, no oil, overheat or fuel restriction
Are you sure it was smoke and not steam?
A fuel restriction or air leaks on the suction side of the fuel system between the pump and the fuel tank can cause an over oiling condition.
When was the last time this 30 year old engine was run?
be sure to look at the important links section at the top of this forum.
Heare is an excellent article on the VRO /OMS system. https://continuouswave.com/whaler/reference/VRO.html

Last time it was registered was 2019, now gramps was pretty good about maintaining his toys so I believe he would have started it last year and with his passing in January I’d be the first this year.
Model would be E175GLEIS
Thank you for the article link and I’ll review it and make sure the VRO is working correctly.

Sorry for your loss.
starting it is not running it. Starting it would not have revealed the running issue as you described.
apologies too for missing the model in your signature

A little update, I was able to finally get out and do some investigation at our local boat ramp. Back the boat down and trimmed the motor out and fired it up. About 3 mins into idling the alarm starts to go off.
Checked the gas bulb and it still felt stiff along with the oil bulb.
Popped the cover off and felt the left side bank of cylinders felt lukewarm.
Checked the right side and found the temp was quite warm almost hot.
I’m “ass”uming that my alarm is an over temp on the right side cylinders. My question is would it be possible to have some sort of flow restrictions on the right side in the heads themselves (anyone happen to them) or is this typical of a water pump thingy (again sorry for the lack of knowledge) in the lower area that needs replaced.

Could be right bank t stat

Even though there’s a noticeable difference in temp? I’ve got a temp gun I can shoot at it if someone knows at what temp the switch activates (closes to ground)?

135-145 temp. Dude quit running that thing before you burn it up !! Put a new waterpump kit in her and new thermostats THEN check the temps.....

Absolutely and thank you for the advice, again I’m new and looking for advice. Already got the pump kit and thermo ordered now. Greatly appreciate all the help.

If the beeping speeds up as the engine revs higher, it is very possible that the low oil sensor electronics inside the oil tank pickup are going belly up. They can give off all kinds of weird buzzes, beeps, or warbles depending on what is failing. A quick check would be to disconnect the oil tank wiring at the motor. If the sound disappears, you found the problem. Just keep an eye on the oil level in the tank occasionally.

If the motor was overheating, you would get a steady horn plus the motor would automatically slow down to 2500 rpm. Due to the age and history of the motor, Bassmaster is correct about changing the water pump assembly and the t'stats right away.

So, changed out the water pump and T-Stats. Back to the boat ramp for a check and alarm still sounding off. Now I did disconnect one of the wires at the motor for the “low oil level” (black wire) and alarm still there. Pulled T-Stat and alarm still their. Alarm increases with rpm still. Any thoughts

Tan wires are your alarm circuits. Unplug them all and try it again. Then plug one at a time the vacuum switch is next to your fuel pump behind the air box.