Coilovers blown

[SR707DRIFT]

So theres this guy selling JIC coilovers and he thinks one is blown. Is there anyway I can tell there blown with out putting them on the car? I want o buy them. But I dont want to pay what hes asking if one is blown. And if one is blown how do I rebuild it?

[nismoracingsx]

check for oil leaking from the dampener? :p]
pretty quick thing, if you see greasy dirt all over one of the coilovers, bet is that's your problematic one..

[Schassis707]

I checked a buddies coilover by lowering the spring all the way down and pushing the strut/damper down and if it comes up or is too hard to push down than it's fine, if it stays compressed where u pushed it down than it is blown or if it comes up really slow it is blown. Hope that helps

[digitial_vangaurd]

id be careful with JIC coilovers, make sure they are the dampening adjustable, because from what i hear the non-adjusting arent rebuildable. if they look oldschool id say save some moola till you see a nice set up on craigslist/zilvia/norcaldrift ;)