Motor Overheat? Motor Overheat?
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    Motor Overheat?
from lunkerlander #16549 #16549  
8/6/2012 7:44:45 AM

Rated:

 Greetings,


Gave the Triton a rest this weekend to take the family out in the pontoon. When I launched I started the motor (90 hp Merc) and went to park the truck. When I got back ~ 5 minutes) I noticed the motor was not "peeing" water. I shut it down and found that muddaubbers had packed the outlet with mud. Once I cleaned this out it was shooting water fine. My question is: is water still circulating on the block if the outlet is plugged or does waterr need to be shooting out for the motor to cool? Ran the motor for a couple hours and it seemed fine. Any way to tell if any damage was done? Any info would be appreciated!
Thanks,
Matt


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   No problem from Jeff Hahn  8/6/2012 8:06:26 AM
 Yes, the water was circulating through the block even though your outlet was plugged. The outlet is just a visual reference and can become plugged with dirt in a number of ways. Your motor should be fine.


Jeff Hahn


   What Jeff said. I have never understood why temp gauges are not standard on outboards. from Wackoman  8/6/2012 9:09:50 AM
 .


   Along with water pressure gauges from Fisherboy #10852 #10852  8/6/2012 1:38:37 PM
 
An H2O gauge is in valuable flying across the lake. It will give you a heads up before anything else. Temp Gaiges are nice too.


   Thanks from lunkerlander #16549 #16549  8/6/2012 5:46:31 PM
 One less thisng to worry about! Thanks for the info.
Matt


   major ditto there from MikeF  8/7/2012 8:45:14 AM
 Especially on boats with hydraulic jackplates; you have to see the water pressure while moving the plate and trimming the OB.


   the tell-tale is only a visual indicator that the pump is working from Brad  8/9/2012 11:41:22 PM
 You could tap into it and run a tube along the gun wale so you just have to look over from the console to see the stream. You could also tap a cheap water temp gage into the same line. If your lower unit intake ever became obstructed it will show an immediate increase in temp, allowing you to prevent an overheating event.


   bad advice from MikeF  8/10/2012 8:36:15 AM
 The location of the water source for your temp gauge should be the source selected by the OEM. Buy a Merc gauge for that OB and have it installed.


   Not true from Brad  8/10/2012 11:48:58 AM
 oem has integrated a point where their instrumentation takes the temp, but that's not the only reliale source of enging water temp. If you put a temp gage on the telltale, it WILL indicate an increase in water jacket/engine temp in time to prevent an overheating event--


My best boating friend ran this setup on his OB in the open seas for years--


   If you run an optimax, you already have a temp sensor from Spookchucker #10778 #10778  8/11/2012 4:56:33 AM
 You just have to have the merc monitor system to use it.


   yes it is gilligan from MikeF  8/20/2012 8:40:07 AM
 Our options are to take advice from you or from a qualified engineer at Mercury who was involved with the design of the temperature monitoring system. DUH And like spookchucker said the sensor is already installed and wired for a gauge.


   Fisherboy is right; water gauge is more valuble than temperature from humminbird #11206 #11206  9/28/2012 8:43:05 PM
 If you loose water flow, the pressure gauge responds instantly, whereas, temperature gauge will respond only when temperature has risen to a noticeable level. My first choice is always water pressure gauge. Also, monitoring water pressure differences over time will tell you when it is time to change your water pump. Cheap maintenance.


Humminbird


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