i have a 85 -90 dt 55 hp outboard went fishing saturday it ran good then i shut it offf to fish and went to start it back up wouldnt start i tried for hours to get it to start so i come back home cleaned the carbs changed the fuel cleaned the tank and changed the plugs and ran some 89 octane gas still nothing i am at a loss here anyone have anything that may help me to look for and i also checked for spark and it has spark in all 3 cyl.