40 hp Merc runs fine but is super loud only at about 2/3 throttle
I bought a used Tracker bassboat (1999)with a 40 hp Merc motor. It runs great across the entire powerband, but at about 4200 rmps (2/3 throttle)gets super loud. If I increase or decrease the throttle, it quietens down - back to normal. Anyone have a suggestion as to what is causing this? Is it anything to be concerned about? Where would you start looking? Thanks.
Click here to post comments
Return to FISHING and BOATS FORUM