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Good morning All,,,,,,,,,hoping the video attachment comes through but please let me know if it doesn't.
Picked up my boat after a long winter with a knocking sound coming from the engine at low rpm when the transmission is engaged.. Mechanic changed cap, rotor and plugs and nothing changed. He thought it might be the lifters.When I drove off, the boat started to vibrate similar to a damaged prop. Vibration and knock disappeared at higher speeds then returned when I slowed down. Once in neutral, all quiet again. I then discovered, due to improper winterizing, the V drive was crack and I had water in transmission as seen in the pic below. Mechanic now believes it could be a head gasket and/or a possible engine rebuild required. I've read some threads with similar circumstances and some say dampening plate. The plate looked fine but I believe he said you could move some of the springs by hand. V drive was replaced, tranny is the same and I'm assuming was flushed, all put back together but with the same outcome and knocking/thump sound. Feel like we are throwing darts and I think an engine rebuild might be excessive. A leak down test was suggested but not performed. If anyone as had a similar occurrence, please let me know how your repaired
Thanks
Picked up my boat after a long winter with a knocking sound coming from the engine at low rpm when the transmission is engaged.. Mechanic changed cap, rotor and plugs and nothing changed. He thought it might be the lifters.When I drove off, the boat started to vibrate similar to a damaged prop. Vibration and knock disappeared at higher speeds then returned when I slowed down. Once in neutral, all quiet again. I then discovered, due to improper winterizing, the V drive was crack and I had water in transmission as seen in the pic below. Mechanic now believes it could be a head gasket and/or a possible engine rebuild required. I've read some threads with similar circumstances and some say dampening plate. The plate looked fine but I believe he said you could move some of the springs by hand. V drive was replaced, tranny is the same and I'm assuming was flushed, all put back together but with the same outcome and knocking/thump sound. Feel like we are throwing darts and I think an engine rebuild might be excessive. A leak down test was suggested but not performed. If anyone as had a similar occurrence, please let me know how your repaired
Thanks
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