R34 Break Problems

[r34gttneo]

Hey guys,

im having troubles with my breaks, i have a hard break pedal, but its like the breaks are not working. they take along time to bring the car to a stop.

the abs lines were removed when the new engine was put in. i have bled the breaks 3 times now and used 3 containers of fluid thru the system, so there should be no air in the lines.

was wondering if any one on here would have some advise.

cheers

scott

[mad082]

Was it only after the engine transplant? does the brake booster have a vaccum line going to it? A hard pedal sounds a bit like a booster problem. If you pump the pedal when the car is not running and it feels the same as when it's running then it's definitely a booster issue. to get an idea of what sort if change you should feel, try it in someone elses car. When you pump the brakes with the car off, the should go hard after the second pump or so.

[r34gttneo]

yeah it has only gone like this after the engine swap. i thought it might be a booster problem too, i did a few checks it has a vacum line coming off the intake manifold there is no leaks or anything. i put my foot on the break pedal when the car is off, then turn it on and the pedal goes down further. so that should mean that the booster is fine (hopefully). with the car off the breaks go rock hard after a few pumps.

[r34gttneo]

so i had the brake callipers overhauled yesterday, and still hasnt made a difference.

any one have any ideas

[StevenCJR31]

even tho you have bled the brakes there may still be air in them, my brother and i had this problem with his mazda 323 and we ended taking it to a specialist who sucessfully pressure bled the system,i suggest you do this