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Author Topic:   Evinrude engine alarm
ledfoot posted 08-14-2001 01:20 PM ET (US)   Profile for ledfoot   Send Email to ledfoot  
This weekend, after running my 1993 225 Evinrude Ocean Pro for a couple of hours, the engine alarm went off. The pattern of use was: run at medium throttle for an hour or so, then idle for a while, then med throttle again, then a long period of idling, and as we pulled into the marina and had to wait ot use the ramp, the engine idled in neutral for 5-8 minutes (occasional forward & reverse). The engine alarm sounded short, rapid tones (every 3-5 seconds) until I got to the dock. I shut the engine off, let it sit for a half hour or so, started it up, and never heard the alarm again in all kinds of use over the next 3-5 hours the next day.

Should I be concerned or was it a fluke?

Was it cooling? I have a strong strem of water at all speeds.

Was it the oil pump? I did notice (maybe its in my mind) that I didn't use very much oil for how long I ran the motor. Is there a rule of thumb?


BlindHog posted 08-14-2001 10:51 PM ET (US)     Profile for BlindHog    
I have the same problem in my 95 90hp Evinrude - idle for a long period and the buzzer goes off. Turn the key off, re-start, and good for 15 mintues.

I took it in and the thermostats were both shot. After they were replaced, I have only had it happen once, last weekend and so I'm now trying to determine if it is the oil sensor.

triblet posted 08-14-2001 11:34 PM ET (US)     Profile for triblet  Send Email to triblet     
There should be four lights built into the
tach. Which one was on?

Oil consumption should be 1 gallon oil for
every 50 gallons of gas.

Maybe you got a plastic bag or kelp across
the cooling intakes.


Cal posted 08-15-2001 12:21 AM ET (US)     Profile for Cal  Send Email to Cal     
For a '92 150HP Evinrude:

Rapid short tones that vary with rpm = no oil flow from VRO2 pump.

Short tone every 20 seconds = low oil level (<1/4) in VRO tank.

Steady horn and rpm limited to 2500 = overheat.

So, either oil pressure dropping off (sounds like my Alfa) at low rpm or a failing sensor. Anyone have a writeup on installing an oil pressure tranducer?


ledfoot posted 08-15-2001 08:47 AM ET (US)     Profile for ledfoot  Send Email to ledfoot     
Thanks guys;

triblet:I do not have any lights on my tach

Cal:I didn't run the motor at varying speeds because I was in a marina. I am concerned that it was the oil pressure, but it hasn't happened since. Is there a way to check oil flow?

By the way, the oil primer bulb on my boat is very hard, I can't really squeeze it very much. Is this typical?

SWarren posted 08-15-2001 08:56 AM ET (US)     Profile for SWarren  Send Email to SWarren     
With the water being so warm right now and having the boat idle for an while the thermostat probably just got stuck. Mine alarm on my 115 went off a few weeks ago off shore after trolling for 3 hours. I shut it of trolled on the other motor. Cranked it up about 20 mins later for the ride home and no problem. Have used it three times since and no problem. I would not worry to much.
Cal posted 08-16-2001 12:28 AM ET (US)     Profile for Cal  Send Email to Cal     
I would check with an outboard shop to see how they would temporarily connect an oil pressure guage to check idle pressure.

I have added a warning light on an airplane engine but it had lots of attach points.

Sorry I can't help more.

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