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  1. K

    Mercruser 4.5 Bravo 3 Low Block pressure Alarm

    Anyone had issues with a low block pressure alarm sensor trouble ?????
  2. K

    Poppet Valve on a Mercruser Stern Drive.

    Has anyone ever had a issue with a sticking Poppet Valve on a Mercruser Stern Drive. I have a newer 4.5 bravo 3 and all . signs point to this. Chasing this all summer.
  3. K

    Poppit Valves Mercruser 4,5

    Anyone heard of or worked on the poppit valves on a mercruser 4.5 bravo 3
  4. K

    Mercruser 4.5 250 HP Bravo 3

    Anyone have the newer 4.5 LT 250 HP Mercruser engine Bravo 3. Your thoughts.
  5. K

    Poppet valve

    Anyone know where the poppet valve is on a 4.5 Mercruser 250 Bravo 3
  6. K

    What degree thermostat should a 4.5 Have.

    What degree thermostat should a 4.5 Have. Bravo 3. My temp never gets over 149 and sometimes I get a low block pressure warning. I wonder if the thermostat is stuck open only 60 on motor.
  7. K

    Mercruser 4.5 Bravo 3 Low Block pressure Alarm

    Ok guys.. Have a 2017 Mercruser 4.5 250 horse Bravo 3. Showing low block pressure alarm occasionally after a long run. Temp never gets above 149. It starts out with good block pressure at 18 to 20 as the day goes it may drop to 7 or 5 psi. at the same rpm. Always shows 2 to 3 psi at idle...
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