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ridehonda400ex
10-17-2011, 06:50 PM
Okay I KNOW THIS IS IN THE WRONG SECTION but i cannot get my brakes to build pressure on my yfz! Ive got a trip to vegas on november 19th and my brakes need to work! lol

CJM
10-17-2011, 06:56 PM
mitey vac (or similar) brake bleeder.

Pump up the vac then open the bleeder. Do it 3-5x each side and bingo you got a lever.

HondaPohl
10-17-2011, 07:00 PM
If you still cant get presure with the mighty vac, maybe your master cylinder needs to be rebuilt or replaced. Just had the same issue on my shee.

250r rider 88
10-17-2011, 07:34 PM
this has always worked in the past for me heard it from someone on here. top off the master cylinder, pump the brake 10-15 times, hold brake lever in and zip tie it to the bars, leave it overnight or longer, 24 hours has always been my standard, the air will eventually find its way out one way or another

never had this not work, if it doesn't like stated above, a rebuild may be in order

ridehonda400ex
10-17-2011, 08:05 PM
well its my rear brakes but same concept lol and maybe ill just ebay a master cylinder and new line. I got the bike with the calliper off and the line hanging on the swingarm so maybe the line is cracked or dirt got into the master cylinder somehow and caused havoc lol. Ive been usin the fronts but they stop on a dime, gotta love the dual pistons

trx310R#24
10-17-2011, 08:16 PM
Originally posted by ridehonda400ex
well its my rear brakes but same concept lol and maybe ill just ebay a master cylinder and new line. I got the bike with the calliper off and the line hanging on the swingarm so maybe the line is cracked or dirt got into the master cylinder somehow and caused havoc lol. Ive been usin the fronts but they stop on a dime, gotta love the dual pistons

its prob the line....

Tommy Warren
10-17-2011, 09:44 PM
fill a mason jar half full with brake fluid and run a clear brake hose from the bleeder to the jar into the fluid and fill your master with fluid and keep pumping until you see no more bubbles going through the clear hose

buck440
10-18-2011, 05:44 AM
i had the same problem and it turned out to be the wrong brake fluid.

crlt250r
10-18-2011, 03:06 PM
Quick way without buying the pump---- Pull the banjo bolt out of the caliper, pinch the line by finger and pump the brake. You'll eventually get a steady fluid flow if the master is good. Then just re-attach to the caliper and bleed normally. Did mine and my wifes bikes in under an hour from dry.Just make sure the copper washers are clean when you tighten them back down. One grain of sand will create a leak or destroy the washer.

Balaz_73*00
10-18-2011, 03:54 PM
If it takes you a month to get your brakes to work, sell your quad.

ridehonda400ex
10-18-2011, 05:53 PM
It doesnt take a month. Was just wanting input so I had plenty of time to fix the problem lol

TheLane
10-18-2011, 07:22 PM
Originally posted by Balaz_73*00
If it takes you a month to get your brakes to work, sell your quad.

great feedback tololol