- When trimming the engine down, it sounds like the tilt or trim motor is stalling, but only for approximately the final 10 degrees. Additionally, the the trim continues to operate until all the way down, but it is noticeably slower than normal operation.
- In the trim up direction after the sequence above, the trim operates slower than normal for ~ 0.5 seconds then resumes normal operation.
- My trim gauge is no longer operating correctly at these near bottom trim levels.
- If the engine is throttled to above ~850 RPM in forward gear with the boat in the water, the trim system and trim gauge seem to operate normally.
The incorrect trim gauge operation makes me hope is that I simply need to replace the tilt bushing, but all advice is appreciated.
There was some buildup along with a few strands of fibrous material behind the trim sender on the left side. Otherwise, my untrained eye says everything is still intact.
A low amp probe connected to an oscilloscope around one of the wires of the pump motor would give a picture of the motor speed and armature connection. A deviation in the waves is an imminent failure.
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