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  1. M

    what year is my mercury

    i just bought this 9.9 mercury and the model and serial number plate is missing. i cant find any information on it, the only number i see on it is b315502
  2. M

    fuel pump or primer bulb?

    i have a 1990 9.9 mercury and it wont start unless im pumping the primer and pulling the string at the same time. i have to do the same thing when i put it in gear but as soon as i get it in gear i can go WOT with no problem but when i bring it back down to an idle it will stall unless i pump...
  3. M

    motor dies when put in gear

    i have a old 50's johnson 5.5 and it will run perfect when idling but as soon as i put it in gear it stalls. i already changes the plugs, did a compression test (70 on each) checked the spark, and made sure my fuel was good. i cant think of anything else
  4. M

    how to clean piston rings on a johnson

    i have a 1954 5.5hp cd 11 and it smokes like crazy. i already changed the oil ration to 24:1 and im using johnson outboard oil. i put seafoam in the gas and it still smokes. the only thing i can think of now is that i have a lot of carbon build up on the piston ring. how can i get that carbon...
  5. M

    1954 5 1/2 hp johnson fuel/oil ratio?

    i have a 1954 5 1/2 johnson cd11 seahorse and on the case it says 1/2 pint to one gallon. i did the math and that is a 16:1 ratio. is that to high. would a 24:1 or a 32:1 ratio work for that. the reason i ask is because it smoke like crazy no matter if im in idle or full throttle
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