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Problem spray painting water based paint

I have been trying to spray paint using a water based paint, but I have been having the following problems;
1) The fluid flow has been "Pulsing" even when I put nothing but water in the gun.
2) When I spray it has this "pulsing" effect and sprays intermittently.
Occasionally the flow of fluid stops, but after a shake or fiddle it starts again.
I have cleaned the gun several times, checked for blockages and even tried using turps in the gun with the same effects as above.
The gun has a 1.5 nozzle and I have adjusted fluid flow, air flow and even the airpressure from 30psi through to 80 psi without any noticable effect. I have used the paint in virgin state and thinned it down by up to 20 percent. It does spray more paint at 80 psi than 30, but that is to be expected.
Am I doing something wrong or is there something wrong with my gun.
It is a standard gun, not gravity fed, and was given to me some time ago. I dont know any details othervthan its a wagner.

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I spoke to a friend who was a spraypainter in his last job, apparently due to the thickness of the paint, I needed a larger nozzle on the gun. I couldnt get a nozzle to suit this gun so I purchased another gun with a cuple of different size nozzles. All seems to be working fine now.

Posted on Nov 20, 2008

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Posted on Jan 02, 2017

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Jan 09, 2017 | Air Tools & Compressors

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