1990 30hp Johnson compression #’s??

  • beave
    MPLS
    Posts: 163
    June 2, 2011 at 4:15 pm #1272501

    Does anyone know what “good” compression numbers should be for a 1990 Johnson 30 HP LS tiller?

    Thanks

    rod-man
    Pine City, MN.
    Posts: 1279
    June 2, 2011 at 4:29 pm #970489

    125+ per cyl.

    beave
    MPLS
    Posts: 163
    June 2, 2011 at 4:42 pm #970490

    Thanks Rod-Man

    cdm
    Oronoco, SE. MN.
    Posts: 771
    June 2, 2011 at 5:39 pm #970499

    They could be as low as 110 psi and still be fine. They are suppossed to be within 10 % of each other.

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