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    Best way to check water passages 79 Johnson 15hp...blockage?

    I was running my motor last night and it was overheating when running at high speed. 100psi in each cylinder and New impeller this year...tell tale blasts water. I was getting water out the top exaust once it warmed up, but even that got super hot. I'm thinking water passage plugged...
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    79 Evinrude 9.9 cooling issues...I could use some help

    Brand new to the forum, but i've read tons of great stuff here!! So I picked up a 9.9 that appears hasn't been run a few years...maybe 4 or 5. Great compression in each 115 each. replaced power pack and got it purring, but cooling is no good. have to prime it up from the water intake vents to...
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