gun problems

alright I have a siphon feed gun with a 2.0 tip I use for primer that is pretty new.. for some reason the gun sputters constantly when I'm spraying out of it... I'm using like 100psi and I spray valspar dtm 2k primer and mix 4 parts paint to one part activator and one part reducer, I even tried over reducing because I thought the primer was possibly too thick but that didn't help any suggestions?

Im not a painting by any means but i believe the pressure should be lower

The air pressure to the gun needs to be 45-50psi at the max. Sputtering culd be caused by anything , even though you have 100psi going to the gun, there is a air pressure knob on the gun itself that can be adjusted. Your tip and neddle could have paint caked on it , I recommend taking the gun apart and placing it in something like a bucket full of reducer after each use. When using paints that include an activator,the paint has a tendacy to stick to the tip and needle even though you might have sprayed reducer through the gun. So just try to clean the gun, make sure you airflow and paintflow mixture knob is adjusted correctly and try and just spray reducer through it first and concentrate on the fog that is blowing out of the gun and make sure it spraying correctly before you spray your paint. Sorry for the book hope i could have helped you.

ya the lower the pressure the worse it gets... I'll try to clean it really good and see what happens

Clean your gun really well, then put it together and make sure all the parts (especially the fluid tip) are tight. It sounds like air is getting into your fluid passages.

that's exactly what was going on..... I noticed that the seal that seals the tip was cracked pretty good. I don't know how it happend. I just returned the gun and got a new one that works great
thanks for all your help

throw it away. everyone used gravity feed guns now days. siphon guns are old news man. gravity feed is just smarter.

ya man I have two gravity feeds and this one siphon just for primer...