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New Needle&Nozzle = low airpressure, bubbles?

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  • Member since
    September 2012
Posted by GMorrison on Tuesday, July 24, 2018 10:33 AM

It's hard to damage the nozzle. As for the needle, I've restored mine more times than I can remember, sort of. I keep the discards around for those times when you need a spare.

 Modeling is an excuse to buy books.

 

  • Member since
    October 2008
  • From: Fullerton, Calif.
Posted by Don Wheeler on Tuesday, July 24, 2018 10:11 AM

Hi Joeri,

Look at the front of the airbrush with a magnifying glass and notice the space around the nozzle between it and the nozzle cap.  It sounds like there isn't much.  If so, and the nozzle cap hasn't changed, then the nozzle must be larger.

Did you get the new parts from a reliable source?  I have heard that there are counterfeit Iwata parts being sold.

Don

https://sites.google.com/site/donsairbrushtips/home

A collection of airbrush tips and reviews

Also an Amazon E-book and paperback of tips.

  • Member since
    July 2018
New Needle&Nozzle = low airpressure, bubbles?
Posted by Prelude_JJ on Sunday, July 22, 2018 2:11 PM

Hi Guys,

 

My names Joeri and I`m new here, and I really hope you guys can help me out, ive been airbrushing for a good 7 years, fixing all kinds of problems, but this time I have no clue whats going on.

 

The week I purchased a new set of Original Iwata .35mm needle and nozzle for the HP-CS, because I dropped the nozzle and needle which came with the airbrush during cleaning, damaging them.

 

I replaced the parts and took out my model and pressed the trigger, and noticed right away there was a huge difference in airpressure coming out of the airbrush, as if only 2-5 PSI was coming out of the airbrush, while the compressor was set at 40 PSI!!

 

Things I have noticed:

- Low airpressure, as if something is blocking the airflow.

- Sometimes ( not all times ) bubbles will appear, without pulling the trigger.

- When I losen the Nozzle Cap the pressure returns, but bubbles start to appear right away.

 

Things ive done so far to remedy the problem:

- Checked if the needle and nozzle were indeed .35mm, which they are.

- Check if needle goes through nozzle ( it does, but I could swear my old needle would go a little bit futher.. maybe I`m seeing things ).

- Cleaned up the airbrush thoroughly, took it appart and soaked everything in lacquer thinner for 30 minutes ( minus Rubber seals ofcourse ;-) ).

- When I remove the nozzle cap, air-pressure is normal, and air is coming out of the little hole below the nozzle.

 

Could it be something`s wrong with the nozzle cap, it didnt fall, nor is nothing blocking it, but when Iscrew it onto the airbrush while pressing the trigger, you do noticed a dramatic change in pressure until it is sealed... resulting in having no pressure.. :S

Unfortunatly I dont have my old needle and nozzle anymore, I threw them away because they were basically useless...

 

Does any of you have any idea what might be wrong with my airbrush?

 

 

 

 

 

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