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  1. J

    90hp Mercury hesitates

    Hello everyone;<br /><br />Hope I can get some engine help here. I have a 15' Bowrider with a 1986 6cyl Mercury 90hp Outboard. Took the boat out Saterday and the engine ran great. Sunday I started the engine and it idles fine but as soon as you apply some throttle it hesitates. The hesitation...
  2. J

    1986 mercury 90hp O.B.- How many cylindes / where does tach connect

    I have a 1986 90hp mercury outboard. It has 3 carborators and 6 spark plugs. I am trying to find out if this motor is a 6 cylinder. There is a sticker on the motor that reads 3 cyl. / 2 cyl but that is all I can find. Also, if anyone knows how to connect a tachometer to this engine I could use...
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