i have a 1992 sp and it overheats, all the lines are good, no leaks, it just isnt sucking water in when i run it in the water, it runs fine when hooked up to a water hose, water comes out the back , what else can i check?
Check the stator vein on the pump near the water pickup.should be around the one o'clock position looking in from back remove the water inlet hose and blow compressed air through the system to get rid of any blockage