I have an ozito sgp-300 airless spraygun and it will not prime. I have cleaned nozzle a few times already and it has not fixed itself. Please advise Daryl

SOURCE: Black streak on back of page.

It is possible that the ink parking station where the heads prime themselves is clogged or full, all ink bled through the heads when priming runs of from here to a resevoir and once this is full you could get spill off that gets transferred through to the rollers. Only way out of this is having the printer serviced, or stripping and servicing the printer yourself.(dirty and messy job)

SOURCE: Canon Pixma iP6210D InkJet

I had this problem: I took out a cartridg to physically clean it, and when I replaced it it said "the ink level cannot be determined, etc, press OK to continue without this function. Use only genuine Canon cartridges, etc"
I kept clicking OK to the dialogue box, and it just reappeared. Then I pressed the OK button ON THE PRINTER which allowed me to continue using the cartridge but without an ink level indication which is fine by me: at least you can drain the cartridge unlike the latest Epsons.

SOURCE: how do you diagnose a Campbell Hausfeld Airless.

Try to fill it with water and spray. YOu may have paint buildup in the system, and will have to disassemble it to clean it

SOURCE: Bought anCampbell Hausfeld airless paint sprayer,

no fluid gets to nozzle or comes from nozzle.
sounds like your fluid line is pluged or the gun is pluged at or before the tip

SOURCE: The trigger on the spraygun

This is a contractors gun its a vary good gun worth about 200 hunderd dollars . The problem is eigther the spring that returns the trigger _neddle valve to seat pisition is eighter stuck or broken. But if you are haveing this kind of problem it means the gun was not cleaned correctly . Im a perfinial spray painter and if the gun isn;t clean then the mechine wasn;t cleaned as well it goes hand in hand . So what kind of mechine are trying to opperate its an airless acording to the picture and that makes sence . You may be able to clean the gun or get a kit to rebuild it its about a hunderd dollars but the mechine most likely needs to be cleaner at best if no completely rebuild and repacked . If the seals in the pump can put out pressure and the trigger on the gun is slack then you shouldn't be able to shut the paint off because the trigger would be open at this point