I recently got a boat with a force 85 motor it has been garage kept past two years and everything worked when it was put away. I got it up and running but am having water pump issues. I tried using the muffs and a tote of water on intake and nothing. Also tried putting water through output and it doesn’t seem to be making it back to intake. I can turn wrenches but not very knowledgeable with boat motors what can I check or look for to troubleshoot this issue