Problem

Cause

Solution

Leaky packing nut

Nut too loose

Tighten packing nut

Nut is worn or too dry

Lubricate or replace nut

Air escaping from front of gun (non bleed)

Air valve in trigger is stuck, worn or misaligned

Clean and lubricate the stem or replace the valve, stem, spring or gasket

Fluid leaking from front of gun

Packing nut is too tight

Loosen nut

Packing is worn or dry

Lubricate or replace

Fluid needle spring is missing or broken

Replace fluid needle spring

Dried finish or dirt in fluid tip

Clean fluid tip

Needle and tip are mismatched

Replace with correct combination

Fluid tip and/or needle are damaged

Replace with new parts

Fluid tip is loose

Tighten fluid tip

Fluid leaking from cup

Dirty or worn gaskets

Clean or replace gaskets

Cup and/or lid are damaged

Replace with new parts