2000 115 johnson. Loss of power on top end

[Jon prange]

I noticed my engine runs good until I go full throttle. I put the throttle down and start to trim it up. When I hit trim up. I hear a loud solenoid sound. Louder than usual. The volts meter on the dash drops. The motor begins to chug. If I back off the trim noise is normal. The motor runs fine.
Is my trim motor shorting out ?
Do I have bad grounds some place?
Are my solenoids for the trim going bad? I ran into this last year and the problem went away. This year it came back.

 

[Jon prange]

I noticed my engine runs good until I go full throttle. I put the throttle down and start to trim it up. When I hit trim up. I hear a loud solenoid sound. Louder than usual. The volts meter on the dash drops. The motor begins to chug. If I back off the trim noise is normal. The motor runs fine.
Is my trim motor shorting out ?
Do I have bad grounds some place?
Are my solenoids for the trim going bad? I ran into this last year and the problem went away. This year it came back.

I believe I just found my problem. No sure why it would cause loss of engine power only on the top end ,and when the trim up is being pushed. The trim motor has 3 wires. Black white green. The green wire was unplugged. And one side of the plug ,the wire has been smashed

 

[racerone]

I thought trim wires are blue for up ( sky is blue ) and a green wire for down ( grass is green )----Other wires might be for a trim gauge.

 

[Jon prange]

I thought trim wires are blue for up ( sky is blue ) and a green wire for down ( grass is green )----Other wires might be for a trim gauge.

On my trim motor I have 3 wires coming out going up in the motor. Black green and white. The green actually plugs into a black wire.
I didn't trace the other 2 wires. Just the crushed and unplugged one. The motor still trimmed up and down with the green unplugged. But the relays sounded funny. The motor trims up slow at first. Then speeds up half way up. At full throttle I could hear arching or like a spark when I hit the trim. I wonder if that green wire was arching on the motor and grounding out when I trimmed the motor up ,steeling power to the spark plugs.

 

[Jon prange]

On my trim motor I have 3 wires coming out going up in the motor. Black green and white. The green actually plugs into a black wire.
I didn't trace the other 2 wires. Just the crushed and unplugged one. The motor still trimmed up and down with the green unplugged. But the relays sounded funny. The motor trims up slow at first. Then speeds up half way up. At full throttle I could hear arching or like a spark when I hit the trim. I wonder if that green wire was arching on the motor and grounding out when I trimmed the motor up ,steeling power to the spark plugs.

I had the same problem last year. I went after the fuel system. I thought I found the problem. He tank has a check valve in it. The ball seamed to flutter. I removed the check ball fitting. It did it one more time on a test run at full throttle. And then the problem stopped all on its own. This year the problem is back. But the sound from the motor when I hit the trim up button is loud. I can hear it over the motor at full throttle from. The drivers seat. Like a solenoid clicking when it's dead silent.

 

[Jon prange]

I thought trim wires are blue for up ( sky is blue ) and a green wire for down ( grass is green )----Other wires might be for a trim gauge.

This is a 2000 motor. It has its very own repair manual in 2000 not many were built. Bombardier was taking over OMC after bankruptcy.

 

[Faztbullet]

The wires in question are for trim gauge/sender. Your problem is trim motor as it failing.

 

[Jon prange]

The wires in question are for trim gauge/sender. Your problem is trim motor as it failing.

I am suspecting that also. But will try this out tonight. If the relays reverse polarity. Then trimming up will reverse the green to a positive ,and if the motor trimming up to a high enough position crushes the wire and insulation against metal it will cause a direct short. Just like the windings in the trim motor shorting together.

 

[Jon prange]

I am suspecting that also. But will try this out tonight. If the relays reverse polarity. Then trimming up will reverse the green to a positive ,and if the motor trimming up to a high enough position crushes the wire and insulation against metal it will cause a direct short. Just like the windings in the trim motor shorting together.

 

[Jon prange]

I mega ohmed the trim motor. It showed no shorts from winding to winding. And no shorts to ground.

 

[Jon prange]

I mega ohmed the trim motor. It showed no shorts from winding to winding. And no shorts to ground.

Yup. Runs fine now. The pinched wire was a direct short