One of the best ways to increase the water pressure in your hose is to use a specialised pump - like this Hozelock Garden Jet ...

Assuming a good suction hose connection from the static water supply source to the pump inlet and a "tight" pump (no air leaks) after primer activation, you should see a small amount of primer ...

Further, some hose that’s labeled 1.75 inches actually is 1.88 inches, and some hose that’s labeled 2.5 inches is larger, to give the hose manufacturer the capability to advertise as having ...

Replacing water pumps on vintage Corvettes with aftermarket and reproduction part ... Use a 7/8-inch socket or wrench to remove the heater hose fitting while the pump is still bolted to the block.