Hi have a 85 hp evinrude and I got a belly full of sand in it after running aground now when I connect the earmuffs to flush the motor out i get a lot of water coming out the lower unit. I removed the lower unit and put a hose up the water inlet pile to the motor and water runs out the tell tail as well as back down the outside of the inlet pipe any idea as to what the problem is and how had would it be to fix Thanks