bizarre behaviour from spray can

Started to use a can of Acid 8 Etch primer which is about half full and probably getting on for a year old. It seemed to have run out of puff so suspecting a blockage I cleaned the nozzle with solvent. Now sprays for one or two seconds then out of puff again. Inverted can, as when clearing the nozzle after spraying and it had plenty of oomph with a good spray of paint. Tried it again with can upright and no oomph again. Inverted can and plenty of spray. This has been repeated until I got the job done, awkwardly, with the can upside down. I have never experienced this with spray cans in the past. Any ideas as to what is occurring? (No amount of shaking of the can made any difference.)

Mick

Edited By mick H on 23/09/2023 10:22:29

Pickup tube dislodged?

Hi Mick, I've had that happen once, and I suspect that either the tube inside had fallen off or a split had developed in the tube up near the neck, it was very confusing.

Regards Nick.

Thanks very much gents. Sounds about right. Now getting quite adept at spraying upside down.

Mick

How odd - I had the same problem a week ago!

Utterly frustrating, I had to give up in the end as it was impossible to spray a good finish a few puffs at a time.

Neil

Just a thought :- the etch primers tend to have a surprisingly short shelf life. Is it possible that some of the primer has plated out on the bottom of the tin and is blocking the pickup tube when vertical? I recently had to throw ut some 2K etch primer in a tin because of this issue