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Tamiya Basic Spray Work Airbrush keeps spraying paint without pulling trigger

3 replies
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  • Member since
    June 2020
Tamiya Basic Spray Work Airbrush keeps spraying paint without pulling trigger
Posted by JimLo on Sunday, June 14, 2020 8:14 PM

I've tested this on my old and a new Tamiya Spray Work airbrush now and don't know what's wrong. I was spraying Vallejo Metal color ( unthinned since it's already thin) and the airbrush is connected to a Sparmax compressor. once I turn on compressor the paint sprays out even when I'm. Or pulling trigger back. When I do pull trigger back of course it sprays even more paint. Needle is in all the way and not bent. No leaks of paint cup. Compressor hose is attached to an adapter to properly fit the airbrush to the iwata hose. What's going on? 

  • Member since
    July 2013
  • From: Chicago area
Posted by modelmaker66 on Sunday, June 14, 2020 11:15 PM

Strip down the airbush and clean each part with lacquer thinner very thuroughly. That should stop the paint spraying out the tip. The air trigger is stuck. Remove the trigger and clean it from the top. Clean it with thinner also and put some lube on it and reassemble it.

  • Member since
    June 2020
Posted by JimLo on Sunday, June 14, 2020 11:18 PM

Thanks. I'll try that. It's just odd this happened when the airbrush is new never used. I even lowered the PSI. 

  • Member since
    November 2008
  • From: Central Florida
Posted by plasticjunkie on Monday, June 15, 2020 12:21 PM

The olny way for paint to come out of the nozzle without pulling the trigger back is cause the needle is not seating completely. It could be some junk, a piece of metal, etc not allowing the needle to go all the way forward.  




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