Mayhew makes a spring-loaded hinge pin remover. The tool is assembled from three parts: a tool steel punch pin tip, a powerful spring, and a small weight attached to the spring’s end. Roy Berendsohn ...

I f the self-closing door to your garage isn’t closing hard enough to latch properly or the door slams shut, you can adjust the spring hinge tension with a hex wrench and pliers. Start by ...

If the door still won't stay open, do the same with the lower hinge. Hopefully, your door will behave a little better when you're done. Hit the link for the full step-by-step.