Hi I just rebuilt the engine on my 50hp Mariner, i think its an '86 the serial number is A717657. I got it running and now there is low pressure from the water discharge tube at idle (good once rev'd up) and it always spits water out the exhaust ports at the top of the leg. Is this normal or did I mess something up? I also bought the motor not running so I'm not sure if it did this before or not. I would appreciate any help with this, Thanks, Calvin