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1999 johnson 90 hp sputter

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  • 1999 johnson 90 hp sputter

    Hello,i am having troubles with my 90 hp johnson. At first thought fuel,replaced fuel filter waterseperator,clean in line filter on motor cleaned all jets and bowls.Still sputters after warm at around 2500-3000 rpms.Unhooked fuel line and ran from new gas in gas can still sputtered. Changed plugs still,changed coils,still,changed plug wires still.Is there chance that the impeller is damaged enough that is overheating and the temp light is not warning but the S.L.O.W system is activating.It is strange though becouse it comes and goes how bad it sputters?

  • #2
    Does it run ok above 3000 rpm's?
    Regards
    Boats.net
    Johnson Outboard Parts

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