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Discussion Starter · #1 ·
At my work there;s gun that started to spray funny. Siphon cup gun (sharpe). It spray intermittenly, kinda like machine gun (on and off) or like if someone is turning air on and off very fast. Took whole gun apart, made sure its all clean and everything and it still does it.
 

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It's sucking air from the seal between the fluid needle and the gun body. Just tighten the nut to squeeze the seal tighter against the needle. A drop of spraygun oil is good too to keep the seal from drying out. Dan
 
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