Re: 1996 90 HP Evinrude 90 Degree Crossflow
Best to strip the carbs of all pcs, floats, etc. I'd pull all the jets out of the carb, idle, intermediate and high speed jets. Label which went where. Visually check jet each for restrictions, such as dried fuel gel or debris (old fuel hose pcs.) Bombardier makes a special screwdriver to remove these jets without damage: 317002. If there is any dried fuel gel in any passages or jets, you have to use a special type of carb cleaner to dissolve this fuel (gas) residue. An aerosol carb cleaner such as a Gumout product works just fine in this situation. You'll want to be sure the small passages in each carb are completely clean of any possible dried fuel residue. You can't see thru these passages, but they must be clean. (the carb kits include new core plugs)- I've been lucky over the years-have not had to remove the core plugs in the upper carb body in order to get the carb passages clean. That's your call.
