2004 Elantra, how to retract rear brake piston?
 

Greetings,

my 2004 Elantra (gt, no ABS) needs new brake pads at 38k miles. No
problems here.

I have the pads, grease, and a full tool chest, start on the change
(rear passenger side first) and...
no matter how hard I try, I am unable to push the piston back into the
housing enough to make space for the disk.

1) parking brake is not engaged. Not at all.
2) I did it before, I am definitely trying hard enough

Help!

--
Marcin