I have a 1989 Johnson GT150. I am pretty sure it is going into slow mode. I run it on plane for a few minites and will loose power. I turn the key off, start it back up and it will run fine, on reduced RPM's (RPM guage is not working). I do not have any alarms going off. What causes it to go into slow mode & how can I troubleshoot it ?<br /> It seems to run fine without a load, with the warm up lever up. For different problems, over the past two years I have replaced the stator, coil pack and power Pack. But still have this problem.<br /><br /><br />Thanks<br />Dan