Hope this is the correct location for this post. Background - I have a 1997 Four Winns Horizon, VP SX outdrive that I bought last fall that I am “going through”. Noticed that the trim pump was making what can be best described as a “missing” sound mechanically. The motor was running but it sounded like maybe air was trapped. So, I checked fluid level (outdrive in full up position) - level was quite low. No signs of any leaks that I can see anywhere. I added about 1/3 quart of trim fluid up to hole. When I went to test unit, motor and pump ran but no movement and strange muffled sound came from pump. Deep breaths and self doubt creeping in. After a few more attempts the outdrive began to move again- exhale and smile. “Missing” sound seems to have gone and outdrive is moving up and down fine, but the pump doesn’t really sound very “smooth”. In the down direction sounds better than up. It almost sounds like when a solenoid is getting old and starts buzzing.
Questions:
1) why would pump not work after refilling level? It had enough fluid to operate prior to refilling, so it’s not like it “lost prime”. Stuck valve?
2) what’s best approach to diagnosing these units?
Thanks for any insights.
Questions:
1) why would pump not work after refilling level? It had enough fluid to operate prior to refilling, so it’s not like it “lost prime”. Stuck valve?
2) what’s best approach to diagnosing these units?
Thanks for any insights.
