Brake problems after ss lines installed...
yonwd
Band Wagon
first a little background info...
i just put in some ebay ss brake lines for the wagon a couple of days ago. brake bluid was replaced and bled properly (in right order, 3 times each side and all around 3 times). after driving it i realized that braking is only slightly better (read: almost no difference) but at times the pedal will go to the floor quicker than it used to(best way i can describe it) and with minimal braking effect. i was also disappointed that i didnt get that firm feel like i have in my other cars in the past.
so with the help of my wife i again bled my brakes watching and hoping to see some air come out but i didnt get any air out of the system. i have to assume i dont have a leak cause i've been keeping an eye on fluid level and there was no drop in fluid level.
so tonight i get home pump the brakes about 2 times and i get a rpm surge from about 800-1300rpm. now i have to say that i dont know if this would have happened before the ss lines were installed.
now to my dumb question:
do you guys think that this surge is happening because of some vacuum leak? if so, why now? i didnt touch any vacuum hoses all i did was replace the brake fluid and lines. i inspected the the ss lines and they looked good. i bled the brakes properly and at two different times, not getting any air out at all the second time. so what gives?
anyway, i cant figure out what it could be. any help would be appreciated... oh, and sorry for the novel...
i just put in some ebay ss brake lines for the wagon a couple of days ago. brake bluid was replaced and bled properly (in right order, 3 times each side and all around 3 times). after driving it i realized that braking is only slightly better (read: almost no difference) but at times the pedal will go to the floor quicker than it used to(best way i can describe it) and with minimal braking effect. i was also disappointed that i didnt get that firm feel like i have in my other cars in the past.
so with the help of my wife i again bled my brakes watching and hoping to see some air come out but i didnt get any air out of the system. i have to assume i dont have a leak cause i've been keeping an eye on fluid level and there was no drop in fluid level.
so tonight i get home pump the brakes about 2 times and i get a rpm surge from about 800-1300rpm. now i have to say that i dont know if this would have happened before the ss lines were installed.
now to my dumb question:
do you guys think that this surge is happening because of some vacuum leak? if so, why now? i didnt touch any vacuum hoses all i did was replace the brake fluid and lines. i inspected the the ss lines and they looked good. i bled the brakes properly and at two different times, not getting any air out at all the second time. so what gives?
anyway, i cant figure out what it could be. any help would be appreciated... oh, and sorry for the novel...
Comments
I had the same symptoms on my Nissan pickup. I changed out the lines, nothing, rear cylinders, nothing, master cylinder, nothing, booster, it was better, but I was still losing pressure and my rpms were fluctuating when I pushed on the pedal.
This is where I found out that these brake systems have this stupid valve that is in between the line from the motor to the booster. It lets pressure move only one way. This went bad and this is what was allowing pressure to bleed back the other direction. It was also causing my rpms to fluctuate up and down when the brake pedal was pushed.
Follow that line from the booster to the engine and see if it is spliced somewhere. I would think the wagon has one but I am not sure. When I get back from work I will get the manuals out and see if I can find it.
PART #5:
http://www.bkhondaparts.com/billkay/jsp/prddisplay.jsp?catcgry1=CIVIC&catcgry2=1991&catcgry3=WGN+4WD+1600&catcgry4=KA5MT&catcgry5=MASTER+POWER+%289+in.%29&ListAll=All&vinsrch=no&systemcomp=Chassis&prdrefno=&quantity=0&act=&count=0&hidSwitch=Switch&hidIrno=%7C005
A ghetto way to check it is to blow into both sides of it, only one way should allow you to blow through it
https://www.hondapartsnow.com/
for $16.64 plus $8.65 for shipping and delivered to my door in 10 days of the order date. only a couple bucks cheaper than the dealers around me but i didnt have to take the time to pick up the part. installed in literally 1 minute and voila!
problem solved! now the car brakes like i thought it should with ss brake lines! you guys are awesome!!! thanks for the help!