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    Johnson V4 120Hp -86 Bogs down/ loses power at RPM above 2500

    I have been using my Johnson now for many trips this summer, it´s been running flawless until yesterday.. On the way home I cruised at 3000rpm for a while and when I started to throttle up it suddenly started hesitating and lost power, it newer reached 4000rpm and just boged down to even less...
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    Johnson v4 120 hp Looper Overheat alarm at WOT

    Hi! My V4 120hp looper -89 overheats at starboard side at 4000rpm and above, with the alarm squealing (high temp measured with gun, so the alarm sensor is correct). - The water pressure at idle is ~15psi, above 4200rpms it raises to 30psi (max what the gauge can show). - Tried with the old...
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    Water pressure gauge installation on Johnson V4 120hp -89

    Re: Water pressure gauge installation on Johnson V4 120hp -89 Still can?t fint this "plug"... Please look at the pics I took of starboard side of engine. Where should the "plug" be?? Thanks for the help!
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    Water pressure gauge installation on Johnson V4 120hp -89

    Hi, Trying to install a water pressure gauge on my Johnson V4 120hp outboard. Just not sure where to tap it in on the engine. I found that the connection included in the kit do fit in the threaded holes on the cooling covers (one threaded hole on each side of engine), its just that I don?t...
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