Keithmanlite
Cadet
- Joined
- Sep 2, 2014
- Messages
- 14
Purchased the above mentioned boat, took out twice before buying, no problems. This is 305 Alpha 1 system. After taking ownership, problem started occurring. Once motor warms up I hear loud knocking above 3300 RPM. I can back the system down to idle wait a minute and start up again as long as I stay under 3500 RPM problem stays at bay. Originally thinking ignition problem, changed wires, plugs, coil and am going to do cap and rotor. At one point I took the 17 pitch prop off and put on a 20 pitch thinking I could get more speed with less drag. This made problem worse boat wouldn't maintain 3K, no matter what I do the problem keeps apparently getting worse. I have uploaded a video which contains the audio I feel is important http://youtu.be/mgWacR1N4qE . you can hear the motor all of a sudden loose power then knocking starts. I don't know what this is. I want to get a plan to work on boat over winter and restore as much as possible the boat to its original power and speed. I am new to boating and power systems, I am familiar with car engine repair and maintenance. The boat starts and runs great in driveway and at the launch. Turn the key starts immediately and idles between 6-800 Rpm. Like I already stated am going to do cap and rotor next, am planning on checking timing if I can find scale and mark, but don't understand how timing could shift when warmed up
Any advise greatly appreciated, hoping I didn't get a lost cause
Any advise greatly appreciated, hoping I didn't get a lost cause
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