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  1. K

    2003 4.3 MPI Mercruiser Problem

    Here's a little update. Pulled heads and head gaskets appeared good. No visible cracks or abnormalities to block or heads. Block surface flat. Had heads done and no obvious problems. Machinist stated valve guides were actually a little tight and guides were reamed.
  2. K

    2003 4.3 MPI Mercruiser Problem

    Got it thanks
  3. K

    2003 4.3 MPI Mercruiser Problem

    I'm trying to figure that out. They are not labeled.
  4. K

    2003 4.3 MPI Mercruiser Problem

    2 red warning lights on the dash
  5. K

    2003 4.3 MPI Mercruiser Problem

    Hi, I'm having some issues with my motor. Below is everything done so far. Looking forward to your help. 2003 4.3 MPI Mercruiser Seawater and Closed Cooling Boat runs in fresh and salt water. After running in salt water always flushed for 10-15 minutes with fresh water and Salt Away. While...
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