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  1. R

    1985 90hp mercury loss of power

    I have a 90 mercury just dont have the power to get out the hole that it use to have. Have good spark on all cylinders compression is 135-140 on all 6 cylinders. This motor has never had a rebuild its all orginal except I put a staor trigger and new switch boxs. This engine is on a 15.8...
  2. R

    85' 90hp mercury power loss

    I engine is very slow getting on a plane with just me. Will not plane with 2 people. This engine is on a 15.8 fiberglass fishing boat. The stator trigger both power packs have been changed new sparks plugs. This engine is an inline 6 compression ranges 125 to 130 psi except #3 is 118 could...
  3. R

    1985 90 mercury Idle problem

    I have a 90 mercury on a 15.8 ft fiberglass boat. Just had a stator an trigger replaced also power packs. When starting have to choke it with the throttle down Will not Idle at all. Sometimes it will idle for a few seconds but when you put into gear it quites. Its also very slow to plan has...
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