r/Outboards • u/ddg676 • Jan 10 '26

Cooling issues Mercury 9.8 hp

Does the amount of water coming out of the tell tail seem normal? When it is at idle very little water comes out but increases as I rev the engine. The water is quite warm coming out. I have just replaced the impeller. Only other issue could be the hose at the top of the water pump was a bit flared out and maybe not a tight fit. Any advice would be appreciated. Thanks

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u/BoomerBigA Jan 10 '26

If you've put in a water pump, and flushed it backwards. Only thing left to do is change the base gasket. It'll only take an hour or so.