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.
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.
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...