Internal Priming Diagnosis
1:49
17:01
133.7K views
At 1:49 in
Trouble Shooting Airless Paint Sprayers
What happens here
The presenter and John discuss the typical cause of an airless sprayer running but not building pressure: a stuck 'seat ball' inside the piston. They power on the sprayer, demonstrating that despite the motor running, no paint is flowing consistently from the prime tube when the prime knob is set to 'prime'. This confirms the lack of priming action and strengthens the suspicion of an internal blockage affecting the ball valve, preventing it from seating correctly and building pressure.
Goal: Confirm lack of priming and identify the suspected internal component (ball valve).
Tools and materials
- Airless Sprayer — Used to demonstrate the priming failure
What they say
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What they say
(886 characters)Auto-generated from the video audio.