I've finished up installing an integra brake swap on my 92 civic hatch. While pulling the car out of the garage I pushed in the brake to find that it pretty much went to the floor before it caught. After the first push it seemed to build up some more pressure but again after a few seconds it was back to going to the floor.

Does anyone have any ideas what could cause this? Here is the setup... 94 teg front and rear disk brakes, 4040 proportioning valve, gsr M/C and brake booster.

Also if the car is off and I pump the brake peddle it builds pressure but it is released if I hold the peddle, and while holding it there is creeking noise coming from the M/C area.

Thanks for any tips!

 

it's probably air escaping. Did you bleed the brakes?

 

you may have a bad booster or master cylnider too.

Or you didn't bleed the brakes right.

YOu dont see any fluid leaking anywhere at the calipers, around the pistons, or any hose fittings near the prop valve or master cylnider?

 

Bleed brakes before buying anything.

 

Try bleeding the brakes....have some one pump the brakes pedal slowly a few times then have them hold some pressure on the pedal while you open the bleeder screw at the caliper. Do this at each wheel until you stop seeing air bubbles come out. Start at wheel farthest from master cylinder (right rear) and work your way to the left front. Keep an eye on the brake fluid level in the master cylinder...if it goes dry you start over and that's no fun for anybody. With as much brake work as you did expect bleeding to take a while and maybe a couple of trys toget it all out. Once the pedal is firm ( a Honda with the engine off has a very hard pedal) if the pedal still creeps down when you sitting at a stop light then you will need to replaced the master cylinder becasuse the seals on the pistons inside the master cylinder are letting fluid leak by. Hope this helps.

 

thanks for the info.... i did bleed the brakes but not for very long. I'll redo it... should the car be running when I bleed the brakes??

 

no need to run the car.

Tell us how you are going about the bleeding, because often times, people will do it incorrectly, and end up putting more air in, than they are taking out.

 

I've never seen a bad booster- probably air in the system, a bad master cylinder- and you may also have caliper slides that are stuck- on top of the other 2. Bleed it and let us now how it goes.

 

the way I'm bleeding them is filling the res and then starting with the rear pass. side I bleed that one... then move in an X patern back - front, back - front. I have someone pump the brake and hold it until it doesn't look like anymore air is coming out.

I honestly may not have bled them long enough.... someone had mentioned to start furthest away from the m/c, should i do the rear pass., rear driver., front pass then rear driver??

Thanks for all the suggestions too!

 

Also while bleeding, tap each caliper with a hammer or wrench to free up any air bubbles that get stuck.