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    90 hp mercury 2 stroke

    I've got a 90 mercury 2 stroke oil injected that is very rough idling and smoking excessively . It runs good at wot. I've change plugs,fuel filter,drained gas out of tank put new gas in, new fuel pump diaphragm. I had to turn out mixture screw on each carb half a turn to get it to stay running...
  2. S

    2003 mercury running rich

    Got a problem with a 90 hp 2 stoke that is hard to start cold or hot and once it does start it smokes excessively and have noticed oil leaking out of muffler after it was shut off i installed new spark plugs but didnt seem to help anyone know what the next steps are to fix this problem
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