Oil box alarm? 225 Oceanpro

Wildman_fab

Seaman Apprentice
Joined
Sep 14, 2008
Messages
30
I have an odd alarm happening.

1994 225 Ocean pro

I run the boat out, 4-5miles full throttle, or almost full, no alarm. Fish all day at an idle, start running back in, its a little rough, bumpy and I get an alarm.

If you back it down to 2000 RPM it will turn off. The VRO pump is clicking every 30 seconds like its supposed to. the oil box is 1/2 full or better. We have tried to pump the ball while its going off, no change, the only thing that makes it stop is unplugging the cable coming out of the Oil box.

Before I open this thing up is their a float or something that could have sank in the box? what does this cable read oil pressure/flow? I do not have the sender (round metal cover on oil box) hooked up for a guage. This wire comes out of the plastic cover that the oil hose comes out of.

If it was starving for oil I would have all sorts of other issues (It would have blown up by now) with nocking, detonation, etc I am thinking is a bad oil box sensor.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,074
Re: Oil box alarm? 225 Oceanpro

You need to figure out exactly what alarm is happening. My '98 Johnny has a low oil, no oil, overheat and a fuel estriction warning set. Your motor may have all these alarms or some of them. I would recommedn a service manual for your motor year, and check into it.

The oil tank will have a float. The alarm will go off, after 1 gal or 5 qts, of oil have been used up.
 

Wildman_fab

Seaman Apprentice
Joined
Sep 14, 2008
Messages
30
Re: Oil box alarm? 225 Oceanpro

Its a rapid beeping, no pause in between. It goes away when I drop it below 200RPM, or if I turn out of the current/wind and make it 'easier' on the motor.
I have to assume its something with how its pulling the oil through the tube.

Yea my next step is to pop the plastic sender off, drain the tank and check for mung/nasty oil in the tank. Also checking the float in there, make sure its not sinking. I also have been told that there is a screen in there that maybe plugged up. I never completely cleaned out the oil box before I ran it (bought it used) I want to start fresh with completely new oil.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Oil box alarm? 225 Oceanpro

Omc had troubles with the oil tanks built in 1995 and prior. Those tanks had electronics in the sender unit of the tank and would give out false alarms. I think you hit the nail on the head when you said you disconnected the wiring going to it and it stopped. In 1996 the new tanks only had contacts in them so when the oil got to low it would sound the alarm. The '95 and older had a brown and black wire coming from the sender. '96 and newer had black wire and brown wire with black tracer on brown wire.
 

Wildman_fab

Seaman Apprentice
Joined
Sep 14, 2008
Messages
30
Re: Oil box alarm? 225 Oceanpro

So I have one of the early box's I believe. I do not have an FICHT motor.

Is there a way to fix the sender? I took it all apart today and cleaned it, pumped out all the old oil and checked the float switch. I think it may be stuck, or sticking

There is a rod with a clip on the top, when I insert it into the oil box it dosnt float up to the top of the clip.


P7051300.jpg



P7051301.jpg
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Oil box alarm? 225 Oceanpro

You stated it was a rapid beeping. That's just what the bad electonics in the sender unit would do. Normally when you had a low oil situation you would get one beep every 20 or 40 seconds depending on the yr of the mtr if all was okay with the sender. You also could have a bad horn but I'm still leaning towards the sender as you said it quit beeping when you disconnected the oil tank wires.
 

Wildman_fab

Seaman Apprentice
Joined
Sep 14, 2008
Messages
30
Re: Oil box alarm? 225 Oceanpro

Yes it quit when we unplugged that specific plug, we were trying to unplug them all, temp sensors, etc while underway and the buzzer going off.

I have since taken the boat out 2X running it from idle up to 4000rpm, and it hasnt blown up yet. I am asuming its getting enough oil HA!

Is there a retro fit kit for the new style sender? or are the harnesses not compatible?
Is there a rebuilt kit for the sender I have now? I am asuming its because it sat outside this winter uncovered and it got wet/corroded.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Oil box alarm? 225 Oceanpro

When you were running the boat at 4000k was the oil sensor wiring hooked up? There are no kits to repair these for what you have now that I know of but who'd want them any way. I would try to find a new one (1996 and up) from either an Evinrude dlr or maybe a marine salvage place. With a new one you may just have to change the wire connectors on the ends. The only difference between to two is you no longer get the 20-40 second beeps. You will just get a horn for low oil.
 
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