Zx9r b1 not much leaver on front brake fitted new seales pads have bled both sides also reverse blead then syphon blead both at same time leaver still soft any poblems with this model ?

Once you have bled the air from the brake lines,clamp off the front brake hoses carefully.Does the pedal feel better now?
Then the pad /caliper fit is allowing too much play.Is the pedal the same?Then clamp the rear hose and try the pedal.Is it fine with the rear hose clamped?If so we now know the problem is at the rear brakes.One common low pedal rear brake cause is brake shoes that do not fit the drums.Remove the drums and look at the shoes,are they showing contact wear fully or just in the middle of the shoe?Remove a shoe and place it in the drum.Can you rock the shoe against the drum surface?Once drums have been resurfaced,the shoes will not fit fully against the drum allowing the shoe the flex when applying pressure to it and this can easily create a low soft brake pedal. Of course rear brake adjustment must be correct once brake shoe contact is correct.To correct brake shoe contact,have your shoes re arc-ed to fit resurfaced drums or install new drums.Don't overlook brake master cyl /brake pedal push rod adjustment too.

DEPENDS WHAT PROCEDURE YOU USE TO REPLACE THEM.IF YOU PUSHED THE CALIPER PISTONS IN WITHOUT OPENING THE BLEEDER AND USING A **** CLOSED THE BRAKE HOSES YOU MANAGED TO SENT BACKWARDS THE FLUID INTO THE MASTER CYLINDER WHERE IS THE POSSIBILITY TO CAUSE THE SEALS ROLLING IN AND ARE NOT HOLDING PRESSURE. THE OTHER REASON IS EITHER YOU NEED TIME UNTIL THE BRAKES BED ON THE DISCS SURFACES.

If you already overhauled the caliper, I would overhaul the lever as well. In fact, I usually overhaul the entire system instead of one or the other. As for the chattering sound, it sounds like the rotor is catching the edge of one of the brake pads. Check to see if the pads are retracting fully or see if the pads are loose in the caliper.

blead from the furthest point forward... so , if your master is on the firewall on the drivers side.. rear right , rear left , right front and then left front...

yes, you can rent one from Auto Zone, Advanced Auto Parts, etc.

try using a line locker close to master cyclinder ,lever should go rock hard if it has no air in system,work line locker down lines to see if lever stays hard.
also check the lever travel to make sure that lever is pushing on master cyclinder plunger as a lot of after market levers dont have correct casting and have to travel in a long way before brakes work even when system is bled. also check to make sure calliper carriers are not bent and pads not sitting square on rotors.
hope this helps

h i from uk if pedal was ok prior to pads change ? then pardon me for suggesting go back to each caliper and make sure you have fitted the spring that hold caliper to its mounting correctly as if not this will allow pads to withdrawer when pedal off but will be able to pump pedal to good feel also these springs do not come into contact with outer pads ! they only keep caliper sprung/secure in placealso have you bled the front calipers ? it is a fact that your brake fluid does absorb moisture over time and also fluid absorbs high temps by conduction from pads and thro the piston of caliper resulting in fluid being o/heated over time then it becomes compressable hence spongy pedal occures it is recommended in service shedules that fluid be flushed at intervals /12 months ? to confirm a point if you blead calipers into clear jar ? you will notice 1st couple of pumps you bleed the flui will be dark brown/black ? b4 freash clear fluid emerges just try it ? you should do this each time work such as new pads/shoes are fitted on any vehicle if you have any more info as to what you discover please come back with results as your vehicle is 2006 i would not suspect there is a fault that req's more expendature at this time ?

Did you run out of brake fluid , if you did the brake master cylinder seal may have reversed and when you are trying to bleed the brakes the fluid is bypassing the seal , you think you have a good pedal when the engine is not running , but when you start the engine the pedal goes to the floor , you will need to fit a new or second hand master cylinder to cure the problem , I had this with my sons car and the problem was cured with a second hand master cylinder , I hope this helps

yes you should bleed all the fluid out of each wheel till you get new clear fluid, do it one whheel at a time.

as long as the mounting holes line up ok you shouldnt have any problems fitting these