Reply To: QD-20 compression.

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October 13, 2022 at 10:03 pm #267594
Bob Wight
Participant

    US Member

    My QD-20 runs great with about 82 psi in both cylinders.    Yours might be a little low due to stuck rings or maybe a blown head gasket.

    Bob

    1937 Champion D2C Deluxe Lite Twin
    1954 Johnson CD-11
    1955 Johnson QD-16
    1957 Evinrude Fastwin 18
    1957 Evinrude 3022
    1958 Johnson QD-19
    1958 Johnson FD-12
    1959 Johnson QD-20
    1982 Evinrude 25hp

    “Every 20 minute job is only a broken bolt away from a 3-day project.”
    "Every time you remove a broken or seized bolt an angel gets his wings."