AtomicMongoose
Recruit
- Joined
- Aug 16, 2017
- Messages
- 3
Hello everyone,
My first post here and I need some help. I recently came into a 1988 Four Winns 200 Horizon for free. A family member had passed and the boat had been sitting for some time unused, however it is still in very good condition. Two weekends ago after a thorough going over and maintenance, we took it out for the first time. At first, all seemed well however after a few laps around the lake the engine lost power and RPMs and developed this strange knocking/rattling sound.
See video for an sample of the sound
https://youtu.be/WdKxWQYPkKw
Noticing a misfire as well, we did a compression test (all good there) and rebuilt the carb and ignition system. The engine starts instantly now, is very responsive, runs smooth and right up to proper RPM yet the rattle remains.
My father (an experienced auto mechanic) and I have been unable to diagnose what it could be. Several sources online report widely varying causes from rod bearings to gimble bearings and u-joins to engine alignment.
We are willing to fix whatever the issue is or have it done, but we really need to find out what it is first.
Thank you for taking the time to look and I'd appreciate any help in tracking down this noise. Really is a shame because the boat, otherwise, is great. Rides smoothly, shifts smoothly, ect so would quite like to get this fixed. Thanks again!
My first post here and I need some help. I recently came into a 1988 Four Winns 200 Horizon for free. A family member had passed and the boat had been sitting for some time unused, however it is still in very good condition. Two weekends ago after a thorough going over and maintenance, we took it out for the first time. At first, all seemed well however after a few laps around the lake the engine lost power and RPMs and developed this strange knocking/rattling sound.
See video for an sample of the sound
https://youtu.be/WdKxWQYPkKw
Noticing a misfire as well, we did a compression test (all good there) and rebuilt the carb and ignition system. The engine starts instantly now, is very responsive, runs smooth and right up to proper RPM yet the rattle remains.
My father (an experienced auto mechanic) and I have been unable to diagnose what it could be. Several sources online report widely varying causes from rod bearings to gimble bearings and u-joins to engine alignment.
We are willing to fix whatever the issue is or have it done, but we really need to find out what it is first.
Thank you for taking the time to look and I'd appreciate any help in tracking down this noise. Really is a shame because the boat, otherwise, is great. Rides smoothly, shifts smoothly, ect so would quite like to get this fixed. Thanks again!