How to prime a Graco Paint Sprayer if it's difficult?
- DdbradfordAug 26, 2025
If you're finding it difficult to prime the pump on your Graco Paint Sprayer, consider the following: * There may be air in the pump or hose. Check and tighten all fluid connections. Reduce engine speed and cycle pump as slowly as possible during priming. * The intake valve may be leaking. Clean the intake valve, ensuring the ball seat is not nicked or worn and that the ball seats well. Reassemble the valve. * The pump packings may be worn. * The paint may be too thick. Thin the paint according to the supplier’s recommendations. * The engine speed may be too high. Decrease the throttle setting before priming the pump.












