why wont my pro comp shocks expand?

I got some slightly used shocks off craigslist and they appear to be just that, SLIGHTLY used and in good shape. However, they do not expand, i had to pull them out, it also was not that tough to push them back in. They just spin if i turn the ends. I heard one mechanic say that that is normal, but then how does it work? thanks

Kenny2012-09-04T16:50:00Z

Favorite Answer

Some shocks are like that. If they are not gas charged then they don't expand.

Have some Koni, they didn't expand either.