Why is my Graco XM PFP system running erratically?
- MMichael BrownAug 22, 2025
Your Graco Paint Sprayer system may be running erratically due to several reasons: * Clogged air filter(s). Clean or replace the element(s). * Undersized air supply hoses. Replace them with appropriate sized hoses. * Undersized air compressor. Use a larger air compressor. * Undersized air supply pressure tank. Use a larger pressure tank. * Inlet air pressure gauge drops below 50 psi (0.35 MPa, 3.5 bar) while spraying. See solutions above for system runs erratically problem. * A and/or B air motor has ice. Open air motor de-ice bleed air control, allow ice to melt, dry or heat the compressed air, or use a smaller tip and lower flow rate. * Metering pump is binding.