Low oil alarm

This topic has 17 replies, 11 voices, and was last updated 11 years ago by Bass Cat Boats.

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May 6, 2013 at 5:00 am #344208

Bass Cat Boats
Keymaster

If its intermittent beeping then it may be moisture in the filter. There should be a little LED light on a black module located on the Starboard side of the powerhead on older engines. The small LED is very hard to see light up though cup yournd around it with the key switch powering the engine while on the trailer, just not started. You should see the LED lit up.

May 6, 2013 at 7:11 am #344221

RonnieF
Participant

Maybe your reservoir itself is bad. Disconnect the two wires from it, straighten a paper clip and jump it out. Turn on the key and if the alarm clears, the reservoir is bad. Ive had 2 go bad on me in the 7 years Ive owned and 11 year old 225 Optimax on my Cougar. Ronnie

May 7, 2013 at 12:43 am #344237

Bass Cat Boats
Keymaster

My xr6 was doing that also. Replaced line, caps, and gaskets without it stopping. Pulled the screen off at the bottom of the pickup on the oil tank and cleaned it with gas. Hasnt happened since. I guess it had just started gummin up and not letting the oil go through it very well. Good luck

May 7, 2013 at 3:48 am #344259

Bass Cat Boats
Keymaster

The gumming is usually from mixing oil styles or brands. The oil tends to string in some combinations.

May 7, 2013 at 4:29 am #344273

idahobasser
Participant

i had the same problem on my 05 3.0 ltr efi and it was the check valve that threads into the block it allows air to be pumped in to the oil tank but is supposed to not let it back out. mine kept going off cause the motor could not keep the tank pressurized becuase that check valve was bad. changed it out have not heard alarm sincehope this helps

May 7, 2013 at 7:43 pm #344293

nodoubledigityet
Participant

Thanks For the advice ,

May 9, 2013 at 3:23 pm #344308

Bass Cat Boats
Keymaster

My oil alarm seems to always go off after I fill up my oil tank. The fix has been to bleed the line after I fill up the tank. Once I do that I am good to go.

May 9, 2013 at 6:31 pm #344347

Bass Cat Boats
Keymaster

The oil tank filling should not interfere with the line. Obviously you must have a leak on the line to the upper reservoir somewhere which allows air into that system. Your removing crank case pressure on the lower tank and thus the bleed back.

August 7, 2013 at 1:44 am #336234

gasaxe
Participant

Possibly got air in the system. Have you checked the tank on the motor to make sure its full?

August 7, 2013 at 2:03 am #336252

Brad Kell
Participant

Remove the cowling and find your oil reservoire on motor, port side I believe. Mine was white but you could see the level through the plastic. If yours looks low which would cause your alarm unscrew the small thump screw on top of the reservoire with the motor running. Keep a close eye on this reserveoire as it will fill rather quickly and tighten the thumb screw back once it is full. This should silence the alarm and get you back to running.I had a 2006 200 Optimax and this happened to me many times.

August 7, 2013 at 2:05 am #336266

RazorCat
Participant

On board oil reservoir isnt full to the top. Put on your water muffs and get water running, start the motor, loosen the reservoir cap, and let it run until it overflows slightly. Tighten the cap down snug (dont over tighten). Kill the engine. That worked on my 07 Optimax.

May 24, 2015 at 12:57 pm #320651

polaris425
Participant

My low oil alarm has been coming on on my 1995 P-II, I replaced the oil cap with a brand new one , alarm still coming on , cheched the reservoir, and full of oil, is there some sort of reset switch or something that your supposed to do after replacing the oil cap , note pig tail connections were connected correctly …….Help

May 24, 2015 at 2:59 pm #320671

Bass Cat Boats
Keymaster

I have a Cougar AE 09 model. I have a 3 gallon tank. I was a little over 1/2 full and still managed to pull some air. I had to bleed air out of the oil reserve on the Merc itself. I tied to a courtesy dock and pulled the cowling. While it was running in neutral, unscrew the stopcock on top of the tank. It took a little while, but you have to watch it carefully. It will come oozing out the top and you need to tighten the stopcock back tight. Dont go crazy, but it does need to be tight. You will likely need to do a little clean up afterwards, but if you have any oil on later trips likely you need to check to make sure that stopcock is tight.

May 24, 2015 at 4:45 pm #320688

Bass Cat Boats
Keymaster

We would manually fill the oil reservoir on the engine. It will be less mess and easy to accomplish with a small measuring cup with a pour lip. Remove the cowling and remove the small screw cap on the upper reservoir. Fill it all the way with no air space in the tank. Hoses get bound and kinked on sharp turns and oil has to slosh a lot, though it does and places air at the bottom of the pick up.

May 24, 2015 at 6:00 pm #320704

grybrd
Participant

The only way to make sure all the air is out of the lines is to take the cap off the engine mounted tank and remove a few inches of oil with a turkey baster or siphon. Replace the cap LOOSELY. Idle the motor on the water or on muffs and let the engine pressure force oil from the boat mounted tank to the engine mounted tank. When the tank begins to overflow, quickly tighten the cap snugly and wipe up the spill. This is the procedure from the manual.
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