I had a marine mechanic clean the carbs, change plugs and do a link and sync. The compression is 118-120 in each cylinder. The boat starts easily, idles great, and runs great a lower speeds. After about 1 minute at WOT the boat bogs down a bit but doesn't quite stall. It goes about 3rd to 1/2 speed and kind of burps or misses every once in awhile. Any ideas what could it could be? It was doing the same thing, but worse, before having the carbs cleaned. What about the fuel pump, bad gas, or distributor? I would like to troubleshoot myself before taking back to the marine mechanic.
Thanks!
Thanks!