Trim/Tilt worked fine in the lake. Pulled up on the trailer, turned it off and it took severel minutes for the outdrive to raise enough to get the boat out of the water. Didn't work on land either. Sounds like it works, pump motor sounds normal, no wierd clicks or anything. It lowered back down without problem, just won't go back up. 1976 Tide Craft. Mercruiser 165 HP straight 6. Mercruiser outdrive.