Hey guys, finally got my boat out on the water yesterday after having to fix the notorious 470 coolant leak in the engine, rebuild the outdrive, gimbal bearing, etc. Anyway, it ran fine/smooth in neutral idling, but when I put it into gear it ran rough and stalled a few times (was embarrassing trying to dock at after launch with this stalling 
). When I gave it throttle it was fine but I noticed flat spots at 2000 RPMS and again at 4000 RPMS. Would this be a carb problem? The carb has been rebuilt a few months ago along with a tune up and timing. I tried to adjust the mixture screws with no luck; any suggestions?? BTW, it is a '78 470 with 470 outdrive, with a new 4 blade 14.5X18 Diamond4 on it; was going nice WOT at 5000 RPMS. Thanks!
). When I gave it throttle it was fine but I noticed flat spots at 2000 RPMS and again at 4000 RPMS. Would this be a carb problem? The carb has been rebuilt a few months ago along with a tune up and timing. I tried to adjust the mixture screws with no luck; any suggestions?? BTW, it is a '78 470 with 470 outdrive, with a new 4 blade 14.5X18 Diamond4 on it; was going nice WOT at 5000 RPMS. Thanks!
