My sprayer in sink works fine but only a small stream comes out of faucet, sometime water comes out of faucet fast when sprayer is on, I'm confused, any advice would be thankfull before I start taking all this stuff apart, thank you

Remove the aerator and tell us if that makes any improvement.

Not the aerator,thanks for replie

This sounds like a diverter problem. We need the brand name of your faucet and its age. Regards, tom