Johnson Fast Strike Problem

[Michaelshaffer77]

Hello,
I have a 1995 Johnson Fast Strike 150. Whenever I get to higher RPMs it cuts out and knocks me back down to about 2000 rpm. No alarm sounds. I let it run at idle for a few minutes and then i am anle to get back to speed but no faster than 30mph or so without cutting out again. It seems like the rev limiter cutting on but i dont get the alarm. I have had the water pump, spark plugs, thermostats, piston o-rings and fuel filters replaced. Compression check is good and there is no warping in the head. Motor is ejecting a constant stream of water and does not SEEM to be overheating. I am at my wits end. I thought about power packs but I'm unsure. Any suggestions?

Thanks,

Mike

[boats.net]

Ground wires at temp sender on engine and turn key on to see if buzzer is working. That sounds like an overheat problem, use a infrared thermometer to see if both heads are even and staying under about 190 degress.

[Michaelshaffer77]

Thanks! Come to find out after taking to dealer and spending $830 without fixing, I found the the port side sensor is bad.