06 Mercury 50 4 stroke acting weird?

Powersd7291

Recruit
Joined
Sep 17, 2017
Messages
1
Hey guys not.sure if this is the place to ask but here goes I recently bought a 06 tracker pro team 170 tx with a Mercury 50 hp 4 stroke boat starts and runs good but once I get on plane it rides at about 4200 rpm it has gone to 4800 but it usually hangs around 4200-4400 I would think it should be running around 5500 rpm it only goes about 25-26 with me and my lady I'm about 215 she's about 120 it's weird if I wholeshot it it will go up to 5100 and takes off good then after a second or 2 will slow right down to about 4200-4400 and stay there no matter what any ideas/ suggestions I'm pretty sure it's the original aluminum prop
 
Top