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View Full Version : s13 loses brakes when car is on

jeb
05-04-2009, 03:13 PM
how do i fix it? they work fine when its off
BoostedCoupe
05-04-2009, 03:15 PM
check the vaccum hose.
jeb
05-04-2009, 03:20 PM
its connected
TrustS13
05-04-2009, 03:49 PM
what about the check valve that should be inside of the hose going to the BMC?
projectRDM
05-04-2009, 05:39 PM
One way valve is dead. Replace it.
ANVIL
05-05-2009, 09:17 AM
did u swap the hose out? i had a friend who replaced his with a regular silicone hose not knowing it had to be a hard lined hose. it kept pinching itself when you applied the brake.