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    mercury 50 blueband no power on cyl 3 and 4

    Engine will idle well but when I throttle up it stutters before reving up. If I pull the spark plugs off cyls 3 & 4 the engine idles and throttles up well, but if I do the same on 1 & 2 it idles but dies when I throttle up. I don't think it's fuel starvation cos it runs well on all 4 cylinders...
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    mercury 50 1980 running badly

    Hi all, I have a 1980 belgium built mercury 50 2 stroke 4 cylinder outboard s/n 9283020. I've had it 2 years and it's never started or idled very well, but ok when WOT. Last year I decided to bite the bullet and strip it down. I removed the power head (I had to use 2 x 3 tonne car jacks to prize...
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