DREYKO

ive been searching and only found references to it, like hold it open or remove it. so where is it?

tinvestor

a spring loaded valve used to hold pressure inside of a closed system (tire, A/C etc.)

dregg100

iTrader: (34)

what he said^^^^ what ur thinking of is most likely on a tire.

HAILERS

http://encyclopedia.thefreedictionar...Schrader+valve

what part of the car are you working on?

DREYKO

im checking the compression
and it looks like if there is just a valve you hold open that'd be easier than pulling plugs ect

WonkoTheSane

iTrader: (2)

Ah, what that means is that if your compression tester has a little button you push down to release the pressure, you can use that. If not, at the hose side of it, you can use unscrew the schrader valve, They make tools for the tire ones, but you can use a small pair of needle nose pliers if you're careful (and your valve is compatible). It should just screw out.