1998 force 40hp engie help

rageman

Cadet
Joined
Aug 7, 2011
Messages
20
Recently when trying to get my boat on plane when I first start out and throttle up the motor starts pulling then the rpm,s start goin up but the boat doesnt go any faster ( feels like its slipping).When i back off the throttle then power up again ( sometimes twice) it will run fine. It only seems to do it when its cold then the rest of the day I wont have any problems.I shouldnt say cold because I have a 200yd no wake zone that I kinda putter thru before I can power up.I dont hear any grinding and it doesn,t slip out of gear because when I back off the throttle it will still pull. Anyone ever had this problem?...Thanks Scott
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
18,076
Re: 1998 force 40hp engie help

Sounds like a spun hub on the prop???
Take a marker and draw a line on the hub and the prop housing.
Next time you go boating after your done and it slipped.Check the line and see if it's moved.
 

rageman

Cadet
Joined
Aug 7, 2011
Messages
20
Re: 1998 force 40hp engie help

I,ll check it . I just put a new prop on and it did the same thing with the old one.
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
18,076
Re: 1998 force 40hp engie help

If it does it with 2 props???
Maybe I misunderstood???
When it's running right,what RPM's is it running at WOT??
What size prop?
 
Top