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Devilbiss finishline pressure question

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Mutz:
Hi, ive never sprayed before; but decided to give it a go.

Problem i have is i have a devilbiss finish line gravity spray gun Think it is the first one. only has 2 adjusters at rear and 1 under air input. top adjuster is fluid, 1 under that is trigger/needle and the one at the bottom appears to be air in.

Now i was told it should give a nice finish with cellulose, but i find it pulsates and leaves a uneven surface.

It has a 1.6 needle setup which im told is correct for celly, im running it at between 45-50 psi, is this the problem, what pressure should it be?

Must be some sprayers on here some where.

Mutz:
Right ive found a manual and pressure is right!!

Hmmm, just found a thread on another site says should thin 30/70 on last coat, is that correct? (Paint/Thinners) not 50/50 as the other coats ive done? as this will give it a good gloss finish!

Range Rover Blues:
Yes. My mate taught me to put a mist coat on first, so that the thinners of the second coat has somewhere to go, then finish with a thinner last coat for a better shine.  I've read that some restorers put 7 or 8 coats on, but that's too much paint or too thin to run out properly.
The bottom adjuster, leave it fully open for now.  Trying to remember what the other 2 do, one is the paint flow IIRC and the other is the nedle stop, that control how far you can retract the needle which in turn controls how much pain t comes out of the gun.

Mutz:
Think i need a service kit as im getting air blowing back into paint canister!!!

Might give up on DeVilbiss, and buy another gun.

Thanks for info RRB.

All these hints help

Range Rover Blues:
Is it an old gun then?  obviously a gravity feed doens't have a pressurised can, have you stripped and cleaend it? they need thorough cleaning but IIRC the gland which seals the needle is adjustable :-k

I'd be able to tell better is I could see it.

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