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    90 hp johnson stutter/misfire above 4000rpm

    Took my 83 j90tlcte out for a test drive, post seafoam. Sure starts up easier and idles a lot smother. However it did not get rid of the misfire/ stutter above 4000rpm's. In fact after 5 years of ownership and running 4500 rpms, then 4300,(low end of spectrum I know) now down to 4100 at WOT.It...
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    1983 90hp seafoam question-ooze from exhaust hub

    After what I am sure is first decarbing ever, a gelatinous substance coated and gelled-up on my exhaust hub. It was mainly devoid of color. Not clear sort of opaque. Is this normal after seafoam and is it indicative of an underlying problem? I also got tons of smoke, no signs of chunks of...
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    American Bosch starter help

    I have read the handy advice on starters posted elsewhere in this forum. On my 90hp johnson (1984) Same results with two fully charged batteries. Bendix wont engage flywheel. Question. The spines(10 of em) on the the drive assembly are dogeared on the top. If I replaced the drive ***, (30$)...
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