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Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 16102
Experience:  Degree in Marine Technology. Gas and diesel marine mechanic.
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Yamaha 25hp 2stroke oil injected runs perfect at full

Customer Question

Yamaha 25hp 2stroke oil injected runs perfect at full throttle for about 10min then warning light comes on and i slow throttle down light goes off and then i can go full throttle again 10more min it runs perfect at about half throttle with no problem what can cause this.
Submitted: 1 year ago.
Category: Boat
Expert:  Jason replied 1 year ago.

Hello my name is ***** ***** am I speaking with?

The engine is either overheating or it thinks it is because of a faulty temp sensor. When was the last time the cooling system on the engine was serviced with a new impeller and thermostat?