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AFV Painting & Weathering
Answers to questions about the right paint scheme or tips for the right effect.
No air pressure through airbrush?
SgtRam
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#197
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Ontario, Canada
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Posted: Friday, December 05, 2014 - 03:41 AM UTC
My Iwata Neo seems to have stopped working, I am getting no real air flow through the airbrush. It will hardly spray water. I have stripped it down cleaned it fully, even run it through the ultra-sonic cleaner a few times, and same issue. I know it is not the compressor as I can run my Eclipse now problem.

Any thoughts?
CMOT
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ARMORAMA
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Posted: Friday, December 05, 2014 - 04:33 AM UTC
I have a strange question for you, is the trigger stiff action wise? If it is I had a similar issue which was cured by lubricating the needle, I know that does not make a lot of sense but give it a try.
SgtRam
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#197
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Posted: Friday, December 05, 2014 - 05:06 AM UTC
Unfortunately not the issue, even without the needle in, the airflow is very low. Even with the compressor turned up to 50psi, almost like it is plugged in the air path.

firstcircle
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Posted: Friday, December 05, 2014 - 05:07 AM UTC
Kevin, how about if you unscrew and remove the nozzle completely... Can you then blast air through it normally? That would point to a problem with the nozzle, possibly some tiny particle stuck in there?
Pedro
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Posted: Friday, December 05, 2014 - 05:12 AM UTC
Kevin, I had similar problem, it was caused by the nozzle cap being clogged with paint just around the nozzle. Clean it and you are good to go I hope

Cheers,
Greg
hardhat
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Posted: Friday, December 05, 2014 - 05:29 AM UTC
Perhaps the spring loaded air inlet valve is either blocked or malfunctioning. I don't usually take this assembly apart on my Iwata but it may account for the lack of air flow.
HTH

Andrew
SgtRam
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#197
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Posted: Friday, December 05, 2014 - 05:39 AM UTC
Even with the cap and tip off there is limited airflow. I took the valve out, and there seems to be good airflow through it.
mpeplinski
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Posted: Friday, December 05, 2014 - 09:25 AM UTC
I'd check the hose,moisture trap or regulator.rubber interior of hose may have failed,moisture trap,regulator could be plugged.

Mike
CMOT
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ARMORAMA
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Posted: Friday, December 05, 2014 - 09:51 AM UTC
The other issue I have had is that the trigger has not seated correctly on top of the air valve and so air flow is greatly reduced.
Phael_minis
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Posted: Friday, December 05, 2014 - 11:14 AM UTC
Are you sure you have the right nozzle? I had this problem by mounting a medium size nozzle on a big size needle

We all are sometimes a little blond, or?
Pedro
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Posted: Friday, December 05, 2014 - 12:18 PM UTC
Raphael, air does not go through nozzle on double action Iwatas.

Cheers,
Greg
dommy20
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Posted: Friday, December 05, 2014 - 03:52 PM UTC

Quoted Text

Unfortunately not the issue, even without the needle in, the airflow is very low. Even with the compressor turned up to 50psi, almost like it is plugged in the air path.




Um, maybe it is plugged in the air path?
Its not the compressor or the hose since you can run your other airbrush. It has to be in the plunger or whatever it's called that the trigger is pushing down on. That may end up being an internally built part that is unserviceable. Good thing you got a second airbrush!
Belt_Fed
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Posted: Friday, December 05, 2014 - 04:45 PM UTC
Check to make sure the air path tube is not clogged with gunk.
Motives
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Posted: Saturday, December 06, 2014 - 02:25 PM UTC
Have you tried using your second airbrush to shoot air through the various parts of your Neo? I would try to determine where exactly the AB is blocked up and then move on from there.
SgtRam
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#197
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Posted: Saturday, December 06, 2014 - 08:09 PM UTC
Have tried everything, cleaned out air passages I can get into, and nothing. Well I guess time for a new airbrush. The Iwata Neo Trigger one look nice.

TANKSIMOM
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Posted: Saturday, December 06, 2014 - 08:33 PM UTC
Had the same problem

Strip it down not just remove the needle and use ultra-sonic cleaner and clean every hole with a brush you use clean in between teeth.

You may of tip the brush at the angle brush used 7 o clock to 9 o clock

SgtRam
Staff MemberContributing Writer
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#197
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Posted: Saturday, December 06, 2014 - 09:55 PM UTC
I may have gotten somewhere, I took the valve out, ran it throught the ultra sonic again, and the air improved a bit. But in the process I have also notice the tip seems to be split, and widened just a tad, and could possibly be blocking air through the cap. So I will buy a new tip and see if that will resolve the issue, $20 is better then $150.

easyco69
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Posted: Saturday, December 06, 2014 - 10:12 PM UTC
check to see if your needle is broke at the tip.
easyco69
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Posted: Saturday, December 06, 2014 - 10:13 PM UTC
oh crap..i should learn to read first
Chrisk-K
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Posted: Sunday, December 07, 2014 - 08:44 AM UTC

Quoted Text

Even with the cap and tip off there is limited airflow. I took the valve out, and there seems to be good airflow through it.



Then, something is wrong with the valve or the pressing the trigger does not open the valve.
stooga
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Wellington, New Zealand
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Posted: Sunday, December 07, 2014 - 11:09 AM UTC
I've never owned an Iwata, but I had a similar problems years ago with a Badger. There was an O ring in the air valve that had perished, so when I pressed the trigger the O ring was not moving to allow air to flow. $0.25 for a new O ring and it worked perfectly..
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