Cant get front wheel back on, disc brakes

[marmalade]

I took my front wheel off, using quick release. now i cant get it back on.<br />
its the gap where the disc should go, its too small [as if the leaver is being used]<br />
so i cant get the front wheel back on, im not too familiar with disc brakes so not too sure if and what i should losen to get the gap big enough for the disc to slot back in.
so bassically the front wheel wont fit back on, the disc brake slot is too small.
any ideas what this could be would love some help.

[cyclerUK]

Is it a hydraulic or cable system.<br />
It's the pads that have probably closed up.<br />
Try inserting a thin metal "blade" (screwdriver or flat metal strip) between the pads to prize them apart and back into their housing.<br />
Gently twist the lever to seperate the pads.Be careful and try not to damage the pads though.

[marmalade]

yeah the brakes are hydraulic, ill try what you said. i thought about doing that but i wasnt sure.<br />
thanks for the help ill be back with the results.