Mine just started doing this sticking crap and not wanting to let’s us open the door. I dismantled and used degreaser to clean and WD40 to lube up. I set the mechanism pointing up on my work bench and popped with a hammer a few times. Works perfect now.

I had a similar problem. Part of the plunger casting was broken. Fairly easy to replace the part which can be found at Lowes or Home Depot. Just replace it. About $7. Good luck!

Smashed it in with a hammer works great now. Thanks to my father for the hit it and hope method.

I had the SAME problem. I used lubricating oil such as WD40, and that fixed the problem!

I just had the second plunger break on my front door, also under porch with a storm door. I could not get the door open, I took the handles off and while using a screwdriver trying to retract the plunger and a huge screwdriver turning the plunger I finally got the door open. Thought I was going to have to get my sawzall out.

I have the same problem. I tried dynamite but that didn't work. The house is gone but the lock is still stuck.

Fubar lol. I can't move that tiny pin over. I'm literally locked INSIDE my house lol