Reply To: Evinrude 5.5

[Don]

Nothing to do with carb flooding, but please use the heavy 16:1 mix in that plain bearing motor…
I am assuming you are still using the pressure tank system, correct?
Tell us a little more about this engine…Did you just get it? Did it ever run right/not rich with the high speed needle set out closer to 3/4 turn out? What prompted you to rebuild the carb?
I guess I would pull the bowl off again, then thread the high speed needle in to its seated position and have a close look, perhaps the threads are messed up and it is not really seating. It surely is possible that the carb rebuild parts are defective causing a slight flooding condition…But, I would think this would affect idle as well…Does the engine idle OK at somewhat normal low speed needle settings? The only other thing I can come up with is that the nozzle casting in the carb bowl is somehow flawed/cracked/porous. Did the bowl get accidentally dropped during the rebuild? Have a real close look at the nozzle casting. Do you have any more of this style carbs laying around, perhaps you can try another bowl/needle combination, using your original carb body. But, I suppose the carb body could be defective/damaged in the nozzle area as well…