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  1. #1
    Join Date
    Sep 2011
    Location
    O'Sullivan Beach
    Posts
    2

    Default 50HP blue band popping thru exhaust

    I have a 1983 50hp 4 cyl blue band merc, has been a good reliable unit for 17 years, had a broken part on the carby about 4 months ago, had this replaced and a tune done, the usual mechanic I used closed up shop. The motor starts and runs but pops out the exhaust and at high revs the motor surges, is this a timing issue?

  2. #2
    Join Date
    Sep 2010
    Posts
    17,076

    Default Re: 50HP blue band popping thru exhaust

    Timing is fixed and normally does not change.----------Try adjusting the lowspeed mixture screws out 1/8 turn each at a time and see if the problem goes away.

  3. #3
    Join Date
    Sep 2011
    Location
    O'Sullivan Beach
    Posts
    2

    Default Re: 50HP blue band popping thru exhaust

    It will be blowing 25 knots tomorrow, I'll make some adjustments and let you know how I go.

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