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  Mercury Oil Injection Alarm Problem

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Author Topic:   Mercury Oil Injection Alarm Problem
Seabrook posted 04-22-2002 01:01 AM ET (US)   Profile for Seabrook   Send Email to Seabrook  
My 21' Whaler Walkaround has a 1991 225 Mercury that will not stop beeping at me. Every 2 minutes, I get 4 beeps, which indicates that the oil level is low. Well, it is full. Oil is pumping from the main tank to the engine mounted tank, just as it is supposed to. I even changed out the oil level sensor on the engine mounted tank and still have the same problem....that 4 beeps every two minutes. Does anybody have any suggestions on something else I could try?
lhg posted 04-22-2002 02:16 AM ET (US)     Profile for lhg    
Be sure air is bled out of the system, and the engine tank is full. My only other guess is that you need to have the warning system serviced, or that the oil injection pump is defective.
Clark Roberts posted 04-22-2002 07:42 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Seabrook, if you follow the blue wire from the oil tank level sensor it will lead you to the "alarm module" (a rectangular unit about the size of a pack of cigarettes). Check all the connections to that unit (unplug and replug) and retighten ground wire if separate and tighten unit mounting if not (ground may be through mounting bolts). If this does not stop the beep-beep you probably should have it serviced and it may be the alarm module itself! happy Whalin'... Clark ... Spruce Creek Navy
Seabrook posted 04-24-2002 11:12 AM ET (US)     Profile for Seabrook  Send Email to Seabrook     
For the record, I fixed my oil alarm problem....permanently. I took the oil injection system off. When asking the dealer about the alarm problem, the chief mechanic said that he had the best solution....take the pump off and pre-mix. He said that many of the pre-2000 Mercury oil injection motors eventually had problems with the oil injection that ended in power head problems. At $12k for a new motor and $100 for a kit to remove the oil injection, I do not mind pre-mixing.
Clark Roberts posted 04-25-2002 06:59 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Interesting comment by the mechanic since Merc's oil injection has no "motor"! I have put thousands of hrs on Mercs with oil injection (from 40hp to 200hp) and have never had a single problem. Others may have had some problems but I know of not a single person (personally) who has had a problem of any kind other than an alarm sensor or module... Since I am currently running 5 oil injected mercs I would like to hear from someone who has had a problem personally and what the problem is/was ... Happy Whalin'... Clark... SCN

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