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  1. J

    1986 Mercruiser 3.0L

    I will attempt all these this evening and give update, I replaced carb a year ago due to one of the screw holes for the linkiage was stripped located in the body of the old. The carb was exactly the same just a newer PN. I’m gonna get rid of the bulb and line slack first.
  2. J

    1986 Mercruiser 3.0L

    It runs great when first fired up, makes me curious if either my fuel lines aren’t collapsing or if my impeller was bad would that immediately shut the engine down? I would think it would slowly considering fuel would still be in lines? My impeller is due to be replaced
  3. J

    1986 Mercruiser 3.0L

    Even though I am removing the primer bulb, I had the supply line in a bucket and had a solid flow of clean fuel when I was pumping it through, the fuel pump is new with filter. My carb doesn’t have a filter that I know of
  4. J

    1986 Mercruiser 3.0L

    Yea I am going to remove bulb today and not have so much slack in line. If that doesnt work I am gonna throw the supply line in an external tank and see what happens.
  5. J

    1986 Mercruiser 3.0L

    Took it off yesterday, the ball moves freely with no obstructions.
  6. J

    1986 Mercruiser 3.0L

    It’s a fuel issue.
  7. J

    1986 Mercruiser 3.0L

    Not throwing parts at the boat. Carb was changed a year ago for a different reason. Just letting the thread know it wasn’t the issue. It’s a 1986 the lines we’re old anyway. Yes the points are fine, it’s not ignition system
  8. J

    1986 Mercruiser 3.0L

    Engine fires and purrs. Approximately 3 minutes in it starts running rough and finally dies. What I have done: New Carb New fuel supply lines (added primer bulb) New fuel pump Checked my vent line and blew air through it…all good. The boat was doing this before I changed all this. Any help...
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