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brake pedal goes to the floor on lock to lock parking

spudboy6

Active Member
Feb 4, 2014
721
114
Swindon
So I changed my brake fluid for DOT5.1 , bled all four calipers and master cylinder ,

since doing my brake fluid . first thing in the morning , I go out to car , solid pedal ,start car , reverse out of my parking space on to full left hand lock , go to press the brake and BOOM pedal straight to the floor , so I lift my foot up off pedal try again and its back to normal ,

wont do it whilst driving at all , but soon as im doing lock to lock parking or slow speed locks not always but every now and then the pedal disappears and soon comes back after lifting off and re-applying ,

have given both front wheels a wobble no play found in any joints or bearings , all calipers tight , no fluid loss , brake pipes aren't trapped and look okay no signs of weak pipes ,

so im stuck , have I got air somewhere ? master cylinder dying ?

car drove the Nurburgring fine on DOT5.1 no problems under extreme heat and force just slow locks and this happened straight after changing the fluid ,
 
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