2015 merc 50hp efi vacuum leak?

woodchipper

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Apr 28, 2016
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brand new motor, and on the side of the engine there looks to be a vacuum pump of some sort, with 2 barbs, 1 connected and one open, it has vacuum to the open one and pulses as its running and sucks air in, is this normal? I don't want to ruin my new engine
 
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