mercury 40hp efi 4 stroke noise

tn fishing

Recruit
Joined
Jul 31, 2011
Messages
1
anyone hearing a noise similar to a dry bearing squeal? It seems to be heard only between 1600-2400 rpm with prop engaged ( no noticable loss of power or boat speed). below and above this range this sound is not noticable. It sounds find thru this rpm range when in neutral. Year model is 2010-2011 mercury 40hp efi.
 
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