I just rebuilt all three carbs on my 1986 60hp Evinrude, the top carb was fine, but the middle carb had a crack down the entire length of the high-speed nozzle (the one that dips down into the bowl). The bottom carb had a crack at each end of the HSN one at the top, visable through the throat, and another crack on the bottom end. I havent owned the boat long. Ever since Ive owned it, its seems like it never hits its tippy top end, full throttle seems maybe 1000 RPM quieter than i think it should. It's pushing a 20ft pontoon, if simply being under such a great load is the reason it just doesnt sound whiny enough. I've also had fuel pressure issues lately, could these cracks be the reason why my carbs were leaky? Because nothing really looked that bad during the rebuilds, except the high speed nozzles. Anyways does anyone know if this is really a big deal? the nozzle itself is perforated afew times so i dont know if the cracking really matters all that much. but id like to know.
