Hi I have a 2004 Yamaha 115 115TXRC and I have been getting an steady alarm and engine going in limp I checked the oil level and pump and it seems to be find so I start to check my cooling system since you can shut engine off and will go off in a minute and start over before alarm comes on again I opened the thermostat housing and have no thermostats in it so that shouldn't be the issue , what else should I look at, I read about a poppet valve but don know what it does
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Engine alarm Overheating
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Yup - if the t-stats are removed that means there was/is a problem in the cooling system.
You didn't mention how long you had the engine and whether or not this issue just started?
What's the flow like on a hose?
What's the condition of the impeller?
I'm leaning towards thinking it's clogged/partially clogged cooling passages in the head.2000 Yamaha OX66 250HP SX250TXRY 61AX103847T
1982 Grady Weekender/Offshore (removed stern drive & modded to be an OB)
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