08-02-2014, 12:09 PM
The fluid needs somewhere to rise to. As you are pushing the pistons back, you are moving the fluid back into the reservoir. If this is already full (don't know why anybody would, but worth a look), it will have nowhere to go, hence your pistons will not push back.
![[Image: car-1.jpg]](http://i1117.photobucket.com/albums/k591/grant-306/car-1.jpg)
Member of the 99% warning or you're nothing club
2000 Moonstone 1.8 Meridian - Sold
2000 China 3dr XS - Dead
1998 Diablo 3dr XSI