I have a volvo penta 5.0gi with an sx outdrive. Ok with the muffs on i get no water. i replaced the impellor and still no water. I ran water backwards through the suction of the impellor and got water to the outdrive. I pulled the cover off (the one on the outdrive with the sx printed on it) and opened up the plate with 4 bolts. I raised the drive all the way up and pull a garden hose in the opening and that is the only way i can get water through the motor. The suction hose in the back of the outdrive look to be in good shape, no leaks. What is going on with my water issue?