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Results 1 to 5 of 5
  1. #1

    Default 1994 Mariner/Mercury 115 HP ELPTO

    i am looking at a boat with this motor. any issues i should look for? any reviews positive or negative would be appreciated

    bc kevo

  2. #2
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,329

    Default Re: 1994 Mariner/Mercury 115 HP ELPTO

    I would perform a compression test on it no matter what! Engine should be warm, throttle wide open and all plugs removed. Trip the safety "dead man's switch to disable the ignition first. Good compression is near/above 120 PSI. It's important that compression for all cylinders is close to one another, i.e., 118, 120, 123, 124.

    Finally, I would also insist on a water trial. Make sure the engine runs smooth, the gauges work and the trim/tilt works. Check out the age of the batteries and the condition of the trailer, particularly the tires (dry rot) and wheel bearings, both which can be used as bargaining chips. If the owner balks at anything--RUN!

    JMHO

  3. #3
    Join Date
    Sep 2010
    Location
    ontario
    Posts
    9,845

    Default Re: 1994 Mariner/Mercury 115 HP ELPTO

    Throttle does not need to be open when compression testing on a 2 stroke.

  4. #4
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,329

    Default Re: 1994 Mariner/Mercury 115 HP ELPTO

    Throttle does not need to be open when compression testing on a 2 stroke.
    That's correct if you just want to know if it has compression. However, with all due respect, I have found that there can be as much as an 11.5% lower compression reading with closed throttles. If I am buying a used engine then I want to know the maximum compression per cylinder. For the hell of it I just checked my 2002 115 HP ELPTO and got 108-109 PSI with the throttles closed vs. 124-125 PSI wide open. JMHO

  5. #5

    Default Re: 1994 Mariner/Mercury 115 HP ELPTO

    people I see with the 115 hp both merc and yamaha seem to like them and they run good ( with the required maint)

    I just bought a alum. triton deep vee with a 90 merc elpto, its loud but runs good.

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