boaterntexas
Petty Officer 1st Class
- Joined
- Feb 4, 2003
- Messages
- 254
my 17' fiberglass bass boat with a 115hp merc and 21p ss prop, can reach 6000, or 7000 rpms at WOT had the rig checked, and it checked okay, had carbs cleaned, and fixed the problem for a bit, now the high rpms are back, hole shot starts out normal, the when the boat starts to plane, the rpm will jump dramticly to almost 6500 unless I back off the throttle, then after boat planes out they will level out at 5900 or 6000, unless I trim down, and take it off of plane then the level out at 5600. I have noticed that at some times, if I take a sharp turn or jump a wake a bit the rpms will jump way up, and will not level out, unless I disengaged the prop come to a stop then take back off.<br /><br /> is this the prop slipping or is there and adjustement to the carbs that can bring this down.