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Home Boating

Consistent RPM's, inconsistent speed?

fishonfishon Posts: 984 Officer
On the lake today. 2006 115hp 4stroke Merc
Taking boat for service in the AM. RPM's stayed at 4000, but speed cruising at 35, then slowed to 31, then back to 35? This happened a few times? RPM did not change, motor seemed to stay constant, but lost speed and then regained. No noice from lower unit. Gas separator under cawlon showed no water. What do you arm chair mechanics, think?
Thanks Tomm
Triton 1870 Bay Sport, 115 merc. 4/stroke,
Fish Shallow saltwater, lakes central Fl. And Lake Oconee Ga.
Live in Lakeland


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