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    Synthetic 2 stroke old for old motors?

    I have just bought a 1989 Merc 45hp (Classic 50). I don't know much about mercs except that they used to say to only use Merc 2 cycle oil. I assume that the previous owner was using regular merc 2-cycle oil. I've used synthetic 2 cycle oil in some of my other equipment and it burns clean and...
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    40hp Johnson..... Hot or Not?

    I have a 1970 40 hp Johnson. I THINK it runs too hot. At idle, there is virtually no water exiting from the exhaust port and, after running it at high speed, and shutting it off, I can hear the metal "snapping". The paint around the cylinders isn't burned, but the motor runs sluggish at high...
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    Sluggish 40 hp Johnson

    I got a 1970 40 HP Johnson from my neighbour. I rebuilt the carb using a kit. The idle and low speed works GREAT ! but the high speed jet is a fixed one and the high speed is sluggish. If the carb had an adjustable High speed jet, I think it would run better if I could lean it out. I have washed...
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