speed jump loss of power

[woodrose99]

throttle up to 3200rpm drops down to 2600 on its own throttel down to 2000 and engine jumps up to 2600 rpm never reaches full hp

[boats.net]

Don't know what motor you have but check compression, check for spark at plugs, test fuel pressure and check fuel system.

[woodrose99]

70 hp 2004

have gone through the entire fuel system throttel up to 3000-3200 and drops back to 2400-2600 and will flux untill more throttel but not much more power and max out at 3200 throttel back to 2000 and will jump to 2600 and run like a new engine increase throttel and loose power as rpm increase only to 3200

[woodrose99]

throttle up to 3200rpm drops down to 2600 on its own throttel down to 2000 and dngine jumps up to 2600 rpm never reaches full hp

Don't know what motor you have but check compression, check for spark at plugs, test fuel pressure and check fuel system.

have gone through the entire fuel system throttle up to 3000-3200 and drops back to 2400-2600 and will flux untill more throttle but not much more power and max out at 3200 throttel back to 2000 and will jump to 2600 and run like a new engine increase throttle and loose power as rpm increase only to 3200

compression is good

[99yam40]

Test spark and fuel pressure at problem RPM

[woodrose99]

70 hp 2004

what would cause the fuel pressure to chang have changed the pump?