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    1999 Johnson 90hp J90PLEE (Missing)

    Hello All Have a 1999 Johnson 90hp J90PLEE. Which is missing some times. Does not like 3000 rpm. Sounds like it is dropping a cylinder but problem is intermittent and is worse at some rpms. Particularly noticeable at 3000 rpm. Have tried changing plugs and used SeaForm in the gas. Changed...
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    1992 Mercruiser 5.0L Alpha One Spark Plugs

    What brand and number spark plugs do I use to replace on a 1992 Mercruiser 5.0L Alpha one. What gap should plugs be set at. I think it is 180 HP, 305 ci, carbureted, Chevy. Thanks for your input GMac
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    1999 Johnson, 90 HP J90PLEE (Runs Rough)

    I have a 1999 Johnson 90HP model J90PLEE which runs rough up until 3000 rpm then runs fine. I have noticed from many posts that this decarbonization process is recommended. I tried going to the link with no success. The link is: http://forums.iboats.com/showthread.php?t=302825, I keep getting...
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    Johnson 1999 90HP Runs Rough at low speeds

    Recently purchased a used 1999 Johnson 90 HP Outboard. It has been well used. It idles rough up through about 3000 rpm. Tried changing plugs no help. Even seems like it is missing around 2000 rpm. Had compression test - dealer says - OK. Should I try this decarbonization thing?? One other...
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