How to prime a grundfos PT18

SOURCE: Flotec Shallow Well Jet Pump won't pump water

The tank is an air tank, it works like a cushon and accumulator.

Have you reconnceted the pump? If not fill the pipe that goes to the well with water. It should not drain down, there should be a foot valve that prevents the water from running back into the well. So if the foot valve is working it should not take a lot of water to do this.

Pour water into the suction side of the pump until the pump is as full as you can get it, reconnect the pump and start it up. Yes it does need to be primed

Good luck

SOURCE: HELP! HELP! SOMEONE PLEASE ! 2001 chevy blazer fuel problems

I would check to be on the safe side the fuel filter is going in the right direction. The arrow is pointing towards the engine away from the fuel tank, Then you need to make sure the fuel pump wiring connections are good contact and did not come loose when driving.

SOURCE: i have a flotec water pump that sits on top of my

if the pump is working correctly, it can either be, need more water to prime it, or something in the well, such as low water, plugged filter, etc....sometimes when you have a system that is intermittently used, it can take 20 or 30 minutes of continuous priming to get it to pull, enough water to maintain the prime.

SOURCE: 1998 suzuki gsxr750 fuel pump inop after replacing filter

You cannot bleed the fuel injection system.Test the pump alone (not on the bike) for sufficient fuel supply.Also check the fuel pump relay.
If all that is ok next time you try to crank the engine (only with kill switch on, the fuel pump primes up) with lifted tank and opened air box, spray a bit of carb cleaner spray towards the throttle bodies.It will help.

SOURCE: Sprinkler pump keeps loosing it prime. Intake line

Check valve might be bad.