Can i use this spay gun to spray down bed lineing or is it caapable to do it???

Try reduce the pressure or change the spray tip seal areyouusingthe correct size tip for the paintyou are sprsying

the paint may be to thick for the gun. or it could be clogged. try spaying plain water through it if it sprays you have your paint to thick

You did not mention what you would be using (material wise) but I assume it must be oil/Alkyd base for that use a .411 or .413 thin material about 15% and make sure you strain the paint first.

Perry

Turn black knob to prime, to left! It should prime in about 1 to 2 mins, it will labour a bit, make sure the paint is flowing through the little clear tube , when it does it's primed! Then turn the knob to the spray mark, the spay length of tube ( usually red color) will vibrate a little bit, the spray gun is now ready to use, (gun on spray also). And spray away! Use water based paints its easier to clean! When done put inlet tube, with filter in a 5gal bucket of water turn to prime, then spray and run the 5gals of water through the spray gun this will also clean pump, hoses and and gun at the same time! When dry wipe nozzle of paint gun with a cotton cloth and remove any dried paint, make sure the needle is clean! Pull trigger a couple of times and observe the needle fit in the nozzle, clear hole etc!
Regards Jeff
Pp lent mine out to another contractor and now I have a priming problem! Never cleaned it right! So that's my next job, cleaning all the bearings to make the bearings seat properly and stop it sucking air!
word of advice never lend your tools out! Unless there prepared to buy a new one to replace it!

Reduce the air pressure,and put a water separator in line.

there are two main passages in a gun.
the fluid side and the air side.
sounds like you allready did the right thing by dismanteling and cleaning everything.
lets assume the gun is good.
i would look at your air supply system. you may be over working it and it cant keep up with your demand.
or the regulator for the air is on the blitz.

2 things to check
1. when was the last time you oiled the gun, without proper lubricant, the driver will not return properly and that will impede fastener feed

2. have you cleaned the nose of the gun? try spraying it with WD40 or some other spay lube after using a spray cleaner, such as B12 carb cleaner or brake cleaner

strip the gun down and clean all the passages where the fluid goes.
make sure you are getting fluid through the line that connects to the gun.

run a thinner/ cleaner through the system until you are sure all parts are clean.
id also pull the nozzle and needle out of the gun to properly clean them.

Try cleaning the spray tip , if you can get the tip out just soak it in all purpose solvent for a while if its not that maybe the paint is too thick try thinning a little with appropriate liquid [ turps or water ]