Pump issue

I have a 18hp Briggs with gearbox and Allison 6.8gpm pump. When I bucket test it I’m only getting about 6gallons a minute out of it. I’m double feeding the pump and getting plenty of water to it. Any ideas what I can do?

Double feeding isn’t necessary at all, it creates it’s own problems. What tip are you using for your bucket test?

No tip just shooting right out of the gun

Briggs have a tachometer?

No tachometer

Until we know the specs on the pump it sounds about right. If it’s a 6.8 at 3k that’s about all you’ll get

Thanks for the help. I was hoping that it was normal