@Gwen Strough,
I just read a post with a similiar problem to mine. one thing to try was take out the screen, nozzle and eductor under the chrome plate with three screws on top of motor. things seemed ok, but the nozzle in my mark 89 is supposed to be blue , but is tan that goes in the 812 model. not sure what this controls, or if it has been in there since 1986. repair person may have changed it out , not having a blue one. anyone familiar with this part? thanks Gwen