My pump valve is stuck - won't move in...
My pump valve is stuck - won't move in either direction. Help? Thanks.
Get a maintenance kit, disassemble the pump, replace the o-ring and lube it all up. You might have some sort of crud in there, but it sounds like simple deferred maintenance is the likely culprit.
Follow this link. When you get to the page, right next to the product description it says "MSR pump maintenance"- click on it and it will give you a full video tutorial on how to do it.