Engine Alarm at high RPM

"Hi,
I just replaced the powe

"Hi,
I just replaced the power pack on a 1996 Johnson 225 Ocean Runner V6 2 stroke. Before it was only running on 4 or maybe 4.5 cylinders. Now it runs good but if I bring the RPM up to 5K, the engine alarm sounds. I immediately shut down. I can then immediately turn ignition on and engine check occurs and no alarm. It does not seem to be hot. I can start up right away and as long as I keep under 5K rpm, no alarm and runs great. It happens every time I go above 5K rpm.

I am going to change the impeller since it has been awhile, but does anyone know what else it may be?

Any help is much appreciated.

Eric"

"fuel restriction alarm.....ch

"fuel restriction alarm.....chg filters,ck for del prob's,..kinked hose,etc."

"Thank you jwbmarine, I will n

"Thank you jwbmarine, I will now focus on the fuel delivery. I will replace the in line fuel filter and I will get a test gas tank and use that to see what happens. That should tell me if its in the motor or the delivery to the motor.

Thanks for your help."