Problem of 3 years old primer in spray can

guys, I like to ask if anyone experienced in using Spraycan Primer which has been idle for 3 years?

I used the spray can for primering my bimmer, and today I found some cracks on the spray areas. Is it related to the weather? The humidity is pretty low these days. It seems strange to me because I sprayed the primer 1 week ago, and it has already dried after few hours later, but it turns crack after 1 week?

The only thing I can think of is that I idle the spray too long. yaya, my paints have been sit here for 3 years, I never think I will ever post a project as my friends said, but finally I started this hobbies again! :iceslolan

p.s. Before spraying, I already warm and shake the spray can well in faq.

did you use any putty? the putty might have cracked if you did

did you use any putty? the putty might have cracked if you did

it is cracked on the area without putty.

Sounds like a plastic/solvent reaction problem. What type of primer was it?

Sounds like a plastic/solvent reaction problem. What type of primer was it?

tamiya grey primer straight spray from can. :disappoin

There might be a problem with your prep.
A light sanding and a good cleaning is important. I've only had problems with primer sticking to metal though, and that was when I sprayed the initial coat a bit 'dry'.