I CHANGED THE MASTER CYLINDER AND BLEED THE BRAKES ON THE CAR. THE BRAKES FELT PERFECT UNTIL I CHANGED THE BOOSTER CHECK VALVE,NOW THE BRAKE PEDAL GOES SLOWLY TO THE FLOOR. DO I NEED TO BLEED THE SYSTEM AGAIN?
THERE IS NO LEAKS ON THE LINES. WHAT ELSE CAN BE WRONG?

 

oo I have same prob only the going t the floor prob, I think you need to bleed brakes again. I'm not positive tho..

 

your booster is shot, the reason it's slowly going to the floor is because the daiphram in the booster has a hole, in it and the vacume is bleeding off! replace the booster!

 

but I changed the master and evrything was fine until I replace the checkvalve which was ok but since I already ordered I decided to install>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mafusmoker &raquo;</TD></TR><TR><TD CLASS="quote">but I changed the master and evrything was fine until I replace the checkvalve which was ok but since I already ordered I decided to install&gt; </TD></TR></TABLE>Replace the new chkvalve w/ the old one. If that don't work, bleed the brakes. If that don't work,take the mastercyl off and double check your work.(No offence) If you can't see the problem there. Check the lines for leaks. No leaks? Hand-check the booster. Or vacuum-check the whole system w/ Mighty-Vac Tester. Somewhere somethin got messed up. Sorry.

 

It's a drag but, eventually you'll find the problem.

 

you read my mind! I will replace tha valve, and if &gt; bleed the brakes again. About the master, it work find for about a week until i change the check valve, so ido not think it is bad. if nothing work, i will have to change the boster, I'm not loosing any fluid at all

 

Same problem about to be fixed going to the 90-93 integra booster/MC with 4040 prop.