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  1. #1
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    Johnson GT150 question...

    Unfortunately I cannot afford a new boat so I am looking at used ones. I have seen a couple for sale with an 87 GT150 and one with an 89 GT150.

    How are these motors? I actually have noticed them in the past and see a lot of them for an older motor...

    Anyone got anything about them they could share? Maybe common problems and what I could check when I look at them? I plan to do a compression test on them.

    Mark

  2. SC Club Moderator ChampioNman's Avatar
    Join Date
    May 2004
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    Crawfordville, FL/Lake Hartwell, SC
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    #2

    Re: Johnson GT150 question... (packfan)

    Pretty bullet proof a solid block for sure been around for a long time. They do like the fuel when run at WOT. Run good oil in it and Champion plugs QL77JC4's and you should be good for a long time.

  3. Member
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    Oct 2007
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    Waynesboro
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    #3

    Re: Johnson GT150 question... (packfan)

    I own a 1990 GT 150 and has been a good engine--no major problems-- I decarb occasionally and run XD50 other than that just normal maintenance. Good Luck boat shopping!!!

    Dave

  4. Banned
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    #4

    Re: Johnson GT150 question... (dreplogle)

    Thanks... Makes me fell better about the ones I am looking @.


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