Hi I am new here and new to I/O boats. I have an 85 alpha one mercruiser with a 350 chevy motor. My question is that since the motor has a water pump just like in a car is there another water pump in the out drive. I am having trouble getting it to pump water with water hooked up to the out drive just like i used to do on outboard motors with a motor flush hooked to a hose. Any help would be greatly appreciated.