aq271c motor. i have noticed today that the lower water pump (raw) is making a grind/squel noise and it is very noticeable but when you are on the throttle it will start to get faint and then stop once it is past 3/4 throttle. the only thing i did different is change the belts. i ran it all day and now it is doing this all the time. i thought a crank bearing but it wouldnt run very well. i have some good mechanic skills so if anyone can help i would be greatful.
