[Yawnza]

Hey just recently got a IWATA 101 1.6 nozzle and sprayed down some primer fine and now that I have to spray carc for the final coat it sprays on fine then after 20-30 seconds it bubbles up any solutions? I’ve check air compressor for water already.

 

[Yawnza]

Thinking it’s contaminated I did use laquer thinner before hand but it was dry can that still effect it

 

[Yawnza]

Looks like CO2 entrapment caused by the HDI catalyst reacting with moisture, possibly from the compressed air source. You might want to pick up a desiccant dryer and see if that helps.
Edit:
Is the product you’re using a single component moisture cure urethane or non-MC 2K urethane?

I am using MIL-DTL-64159B Type II 2K Waterborne Polyurethane CARC. Also what would you recommend for a desiccant dryer for a 165 psi 33 gallon compressor

 

[Yawnza]

Material I’m spraying is composite. primer is NCP280 I sprayed primer then sanded the primer then shot final