"houbs" writes:

my pump keeps leaking after I backwash ,sometimes if I keep turning
back and forth I can get it to stop but tired of this and this time it
wont stop. what is the problem?

Where is the water coming out?

How old is the valve at the top of the filter?
I just replaced mine at about 10 years due to leaks.

If the water is coming out the waste outlet, it's probably
the gasket, which I think you can replace separately,
but if the unit is old enough, go for a new valve body.