Need help ~ no air in paint sprayer

(bancroft ontario)

I have a 2 horse motor on a 40 gallon tank and it builds up pressure 115psi on tank and regulator but cant get my paint gun to spray

not sure what the trouble is as it was homemade made from a mastercraft compressor and all the parts mainly just added a bigger tank as the old one had a hole in it

ps please get back to me at nighthawk_178@hotmail.com with any help ty

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Bill says...

If there is air in the tank, the upstream gauge shows pressure, the regulator gauge shows 115 PSI pressure too, then there is air getting to the regulator.

Assuming that you had air coming out of the compressor to your paint gun before (is this so?) then something has changed.

It were me, I'd turn the pressure down to about 7 PSI on the regulator first.

Then I would look inside the discharge coupler.

With safety goggles on please), and again, very carefully, I would insert a small blunt object (pencil perhaps) to try to unseat the ball check inside the coupler at the back of it. Does air flow out when you do this?

If so, you now know that air is getting out of your air compressor properly, and assuming that you air line connector fits the coupler properly, you will have air flow into your air line.

Disconnect the coupler from the spray gun connector, and again, very carefully, push the ball check inside the coupler at the end of the air line to see if air bleeds out. If yes, the problem is in the valve in your gun.

I'm not a paint gun specialist, but if it is the gun, then I suspect it wasn't properly cleaned last use, and paint has gummed up the works.

Good luck.

Bill