Was working on my truck mount today, prochem blazer xl, and somehow had the pressure regulator too lose and it shot off and water flooded the entire floor. I picked up all the parts, spring, cap, both ends and the bullet and put it all back together. Filled the water box back up started the machine and now there is zero pressure not even back to the water box. Should I prime the pump? Not sure how to do that exactly. Any ideas would be most help