120 mercruiser noise

Rranger

Chief Petty Officer
Joined
May 18, 2009
Messages
470
When I hook the battery power cable up I'm getting this noise? Trim tilt pump running maybe?
 

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Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,507
sound is the bilge pump running. Bad float switch or its wired incorrectly
 
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