Dear Guys
I have a 250 SHO installed in my Stroker and since the begining I’ve had water pressure issues. Even with jackplate
totally raised down and mainteining 3800 rpm continuously the pressure gauge keeps oscilating from 10/20 psi and suddenly goes to Zero. Then I stop and verified no water splitting out. Off course alarm start buzzing and water return circulating again. Engine is new and this occurred every time I use the boat. Changed the impeller but nothing
happened, still suddenly goes to 0 in a flash. The impeller did not appear to have any signs of damage. Any tip?