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Morning, Got my boat back out on the water yesterday for the first time since Oct. Ive been installing new electronics and some other odds and ends. Was pretty excited to get out and give them a try. But I ran into some engine problems. I have a 2006 Merc. XR6, that was last serviced in Aug. 07 (replaced water pump, plugs, etc…). I got the boat in the water. Idled for about 5 minutes, then putted out to the main channel, another 3 minutes, then brought it up on plane for 45 seconds. Then, the alarm went off and I shut it down. In that brief 45 sec. I did see good water pressure. Couldnt see anything wrong so I fired it back up, the alarm sounded again, looked at the back of the motor and saw that no water was coming out. Shut it down, used the TM to get to a protected cove and looked at it further. Nothing was blocking the “pee” hole, and cant see anything blocking the intake. So used the TM to get back to the launch. Fired it back up to get it on the trailer (no alarm). So, is there a possibility that I may have damaged the motor in this short amount of time? Is there anything that I can do short of taking it to a Merc. mechanic? What could it be, something sucked through the intake and blocking? Thanks for your help. Jason
There are several possibilities. If you fish in grassy/trashy water (who doesnt in the Spring) you can suck in a piece of trash that will go to the thermostat. Usually they get blocked open and make the engine run too cool, but they can get blocked completely so that water cant get past. There is a poppet valve on the bottom end of the powerhead that is used to make the block fill with water before water can get out, so that you dont run the top cylinders hot when idling. If this gets blocked, or if it fails and sticks closed, no water flow again. If you have good pressure, it has to be a blockage if you are not getting anything out the telltale. Note also it could be a blocked telltale, and the alarm could be the classic fuel in water or low oil warning as well, depending on how it beeps.2008 Pantera Classic2014 Mercury Pro XS 200
We would suspect a sensor which is used on later model EFI and XR-6 engines. Those later engines utilize computers similar to their big brother direct injection models. The sensor fault could be nothing wrong. Have it checked out, and we doubt if something failed you did any long term damage in that short time preiod. On top end, no water pressure can be faulty in a heartbeat. Though you mention you had pressure. BCB
I have a 2005 XR6 and began getting an alarm. I thought it was the oil alarm at first. I had my buddy who is a mercury mechanic look at it. He insured me the engine was getting oil by it smoking and the oil pump was pumping oil. So I went and fished a tournament the next day. The alarm was going off all morning then about mid day I tried to start my engine and got nothing. My cranking battery was dead, so I hooked my battery cables to one of my trolling motor batteries and it fired right up. The alarm no longer went off. A few days later I replaced my cranking battery and have not had the alarm since. Not saying that is your problem, but I never knew I would be getting an alarm telling me my cranking battery was goin dead.
Water in the fuel possibly? Man we overlooked something obvious. Take a look and is the beeper intermittent or constant?
The beeper is constant. There also is no water coming out the telltale. I believe Ill just take it into the mechanic that installed my water pump in Aug. Im not that mechanically inclined. Can anyone tell me what the beep means when it is constant? – Jason
Nope, heat related and if the tell tale is not discharging, it is an issue which might not be damaging. Though it could be sensors only from that heating in the block.
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