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  1. K

    1986 Mariner Magnum 150 Temp issue

    I have an 86 Mariner 150 that is showing it is running very warm to hot at higher speeds. It has a new water pump kit, rebuilt poppet valve, 2 new 143 thermostats (tested good) new temp sender and seems to have no problem moving water out the tell tale hole. By the time I idle from the ramp to...
  2. K

    1986 Mariner 150 intermittent power loss

    I have a 1986 Mariner 150 2 stroke that is acting up. It always starts quick and idles fine but at times it will bog down under acceleration, some times it will accelerate just fine. It has a new fuel pump, carbs just cleaned, tank just cleaned and new fuel filter. Last night I was going...
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