Running issues after warming up

[bsherrouse]

I have a yahama 175 1996 outboard. i have been trying to figure out why it starts running bad after running for about 30 minutes. i have replaced the coil pack, wires, plugs, fuel pumps, fuel line, fuel bubble, and fuel filter. The carburetors were cleaned as well. The compression was checked too.

after running for about 30mins it starts bugging down and vibrates. the weird thing is it will idol fine. when i come to a stop and try to give it gas to get on plane it boggs down.

any ideas to what the problem could be?

[99yam40]

have you tested your alarm system to see if it is working.
could be in an alarm and RPM reduction but you are not being told that it is because it is not functioning properly. Buzzer and gauges

[bsherrouse]

I have not checked on that. I haven't had any alarms going off but i will check it next. i appreciate you responding and trying to help.

[sony224422]

whats your max rpm when it bogs down? Does it seem to surge at all or constant RPM?


When you first go to leave, will it hit your normal WOT rpm?