50HP 2 stroke Yamaha overheating

A

AndyQ

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Joined
Jun 26, 2011
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4
I have replaced water pump last month i got good flow of water, yesterday I cleaned the carb run great but today I flush the motor and over heat. while cleaning the carb I remove the oil tank but did not disconnect any hose in the tank:confused:.
 
A

AndyQ

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Jun 26, 2011
Messages
4
Re: 50HP 2 stroke Yamaha overheating

:facepalm::facepalm:for everybody info, on one of the screw from the oil tank is a ground cable from the OIL LEVEL GAUGE and I didn't put it back. Now I put it back and is not overheating. Do somebody know why this cause the overheating, maybe a stupy question for you but please let know why
 
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rsouth

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Oct 21, 2011
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Re: 50HP 2 stroke Yamaha overheating

AndyQ said:
:facepalm::facepalm:for everybody info, on one of the screw from the oil tank is a ground cable from the OIL LEVEL GAUGE and I didn't put it back. Now I put it back and is not overheating. Do somebody know why this cause the overheating, maybe a stupy question for you but please let know why
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are you overheating or is the horn going off. Since you disconnected the ground the sensor does not sense oil in the tank, the same warning horn sounds for low oil. if you can put your hand on the engine for 5 seconds and not get burned you are not overheated, if the engine is very hot to the touch then you have a overheating problem. when is the last time you changed the impeller
 
A

archipelago

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Oct 26, 2011
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Re: 50HP 2 stroke Yamaha overheating

Hi,
I have to replace a Yamaha 30 2 stroke (1992!) that's been a great engine (still runs fine but took lower end out with a rock). My choice is between a Yamaha 50 2 stroke or a 40 4 stroke. What has been your experience with the 50 stroke? I'm looking primarily for dependability and longevity (boat operates 100% in a remote location with no technical support).
Thanks,
Rob
 
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