Hi. I've been running this engine for quite some time now and all of the sudden I get this problem. It starts just fine and idles like new. I advance the throttle to full and it will accelerate to 3200 rpm with no problem then from there to about 3500 rpm it takes some time to get on plane due to bogging and sounds kind of like the engine is missing. once on plane, it runs like new. This problem occurs about 95% of the time. I have scoured the maintenance Manuel and did the following: Changed the plugs, changed the coils, pulled the reed valves out and they are fine, rebuilt all three carbs, changed the plug wires, changed the fuel filter, changed the fuel lines, and checked the compression (125, 130, 130). I am now at a DEAD END. Oh, one more thing. When I put my boat up on the trailer, I advance to full throttle and the engine will not pass 2500 rpm and sounds like it's just bogging. I have used the same fuel mixture and prop so I can't think those two things would be a factor. I'm dumb founded, any help would be greatly appreciated.
Thank you,
-Will
Thank you,
-Will