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Ed67

Yamaha 8HP 4 stroke outboard issue

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Last week I had an impeller pump failure at Alamo. Likely the impeller came apart before I even went out there. At the lake it wasn’t peeing water at neutral or in gear. 
I replaced the impeller and pump housing because the impeller melted and clogged the discharge tube. Now the motor pees water at neutral but in gear at idle/accelerate it does not. 
Any thoughts?  Thermostat or other?  Anyone ever have similar issues? TIA  

 

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It could be possible that while running it in a tank, the exhaust bubbles are interfering with water pick up when increasing the throttle. Might be worth taking to the lake like it is for test run 

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I figured it out after removing and replacing about 5 times. . I was missing the rubber gasket in the pump housing. Once I replaced it the pressure was great. 

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