1976 johnson bogs on acceleration at 1800rpm wont get any faster but when i over ride carbs at rear on boat with other driver it will go faster the linkage seems ok i did piston replacement and did not mess with settings got good compression good spark fuel ball is hard cleaned carb spark going to all clys did test them. move adjustment on carbs was able to run at 3000-4500rpms but lost idle very irratic supect something with carbs could it be coils or power pack
