Suzuki swift break pedal problem

[shanii89]

Aoa
I have a suzuki swift 2011 model. I recently got my front disk pads changed and four wheels break service done
I drove the car in city for around 3 weeks than i had to visit my village
Now after 1.30 hours of journey i hit a normal pothole and immediately after that i felt my break pedal gone soft and almost zero break grip
I stopped the car , checked the oil and disks and they were ok
I pumped the pedal and it got little hard and i arrived at my village
But the pedal is not 100 % at its pervious position and its still little soft on grip
Now i faced i Excatly same situation 8-9 months ago during my journey
But when i took the car to mechanic he did break service and nothing else was found faulty.
So kindly suggest me what could be the problem this time and what should i check first ?

Thanks

[hash4u]

try couple of hard brakes
engaging ABS

else will hv to check for leaks,
bleeding, master cylinder check etc

[shanii89]

Ok bro. I will start with the hard brakes first

[hassaan143]

I also face the same problem when car hits a pot hole or something like that but not on regular basis, i got it checked from mechanic he said nothing is wrong with the car. i dont know what causes this problem

[shanii89]

I did the hard brakes and also done the bleeding
But condition is same. Brake works normally even on rough road with lots of potholes
But i sometimes even hitting a small pothole causes pedal to go completely soft. Then j have to pump it

[hash4u]

I did the hard brakes

assuming your car is DLX with abs ?

other things left to check is master cylinder or brake booster

[shanii89]

Brother
I got the master cylinder checked today and also the abs module was checked
Plus they put up the scanner on car and checked for any errors and there were none.
Then they did the calibration of ABS through the scanner ( I don’t know if that’s possible or not)
But after all this checking , my mechanic says u r good to go
But i am not so sure because we didn’t find any obvious faults yet.

[brownrose78]

Seems weak master cylinder and slave cylinder (might be their kit replacement will fix it + poor bleeding issue *Air trap).

@shanii89
In which city, do you live?

[shanii89]

i am from Islamabad
i am also thinking to get the Master cylinder replaced just to be sure

[hash4u]

But after all this checking , my mechanic says u r good to go

is the brake paddle back in place and not sinking

[shanii89]

its not back in its original position but its also not sinking.
i mean the now the brake is working fine (but i feel the pedal is not in its original position ) but sometime the pedal sinks completely.

[hash4u]

i read in more then 1 place
this has something to do with ABS module
hard brakes on loose gravel helped

else its master cylidner , brake booster, lines, bleeding etc
pretty annoying

[shanii89]

so brother is there any way to properly test ABS module and master cylinder.
i can afford to change the master cylinder but ABS is expensive and complicated item, Don't want to change it until there is obvious fault
Also what is brake booster and where is it located ?

[hash4u]

@dani_kk can you check and diagnose his car

[shanii89]

So today i got my Brake Master Cylinder replaced. One thing i noted that the brake fluid that came out was dark blackish color kinda like used Mobil oil. So after the Master Cylinder replaced , changed the Brake fluid with Toyota fluid. Lets see if that solves the problem

[hqureshi512]

AOA,

I need little help with my Swift, 2011 braking system. I got the brakes changed in last Ramadan i.e. almost a month ago got the brake discs polished. There wasn't any sound after it, to my bad luck I want to DANISH MOTORS for an oil change and general service, I asked brake service as well. After almost 3-4 days while driving within the Karachi city brake padel got soft. I pumped the padel to bring it to normal and then drove home.

Since then a weird sound like squeezing appears at low speed when applying brakes, after around 5-6 km drive the sound turns into 'TUK TUK": when applying brakes. There isn't any sound on high speed and engaging ABS by applying emergency/hard brakes.

AS DANISH MOTORS when I saw brake oil was low I requested them to fill the brake fluid and they used GUARD's brake oil. On my complaint, they took a test drive and diagnosed that DISCs need to be turned again properly.

I have got the DISCs polished again from where I got it done earlier (Due to the COST factor) but the problem has again appeared after 2 days.