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The mkiv Supra Owners Club

Big problems with BRAKES


Guest brko

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Hey guys

I have just changed all my pads and disks and the brakes were weaker and it took a long time to stop the car. Even emergency stop took ages at about 20mph. But there is no pulling to the side, no squekes, it just seems very weak.

Then i have checked under the bonnet and the brake fluid was leaking and overflowned.

I then took the extra fluid out and it was better. The brakes were harder and it was more high up.

But it still takes forever ti stop.

Help me!!!!!

Also when i turn the weel there is something squeking, not the brake squek but like metal is rubing againts metal.

Help!!!!!!!!

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Some pads feel rubbish when newly fitted. Bleed the brakes if its all overflowed. Grinding noise? was it there before you touched the brakes? you sure you know what your doing? Pretty important these little gadgets on cars.

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What about the metal squek/grind noise when im turning the wheel????

 

...you sure you know what your doing?...

 

That crossed my mind also.

 

If in doubt, get someone who's confident in working on brakes. A powerful car and poor/suspect brakes is a really bad combination!

 

It probably doesn't really matter too much if you get your ICE wrong; brakes are another matter altogether... :)

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probably air in the lines, bleed them asap(should have been done at time of install really), take it easy for 1st 100 miles avoid heavy braking.

 

if brakes worked before hand id say its unlikely to be slave cylinder.

 

im all for saving money by doing jobs myself but brakes and tyres is where i want to make sure its right

 

best of luck with the fix

 

the metal grinding squeek can be caused by air in the system, pushing pads against the disks, once bled and run in property this should go away.

Edited by geordie82 (see edit history)
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just a guess but when you changed your pads you pushed the pistons in and this pushed back the fluid into and over flowed the little reservoir?

 

my mates a technician and said sometimes you can blow the old seals bleeding and pushing old pistons back in.

 

 

get someone to press on the brake and look for leaks around the calipers. and round the slave cylinder. hope you find it.

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I have fitted the pads before and i think that theycan only click in one way. Also this time i have looked how the old one was placed.

 

But can anyone tell me why there is noise coming from the wheels while im turning the wheel. Its kind of montain bike breaking squek. Kind of metal of metal

 

Anyone knows about this????

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Try taking the pads out and giving the caliper a good clean, all around the hub too. Might just be a build up of dirt causing the noise. Also put some copper grease on the arms of the pads so they slide in nice and easy, will help keep them lubricated too.

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These threads really worry me. If you cant change the pads without screwing it up and making the brakes not work plus a metailic contact noise you shouldn't be working on the car.

 

If you get it wrong (which it sounds like you have) you shouldn't be working on the brakes and could easily kill someone, and I am reluctant to give you any advice.

 

I am with Chris take it to someone who has more knowledge i.e a decent garage

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It's obvious that you would like to work on your own car, but as I and others have said, you can't have doubts about the brakes. I also would suggest that you take it to a garage - or, if you prefer, get someone who knows exactly what they're doing to help and guide you (someone who can actually see and check the brakes over ).

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Hey guys

I have just changed all my pads and disks and the brakes were weaker and it took a long time to stop the car. Even emergency stop took ages at about 20mph. But there is no pulling to the side, no squekes, it just seems very weak.

Then i have checked under the bonnet and the brake fluid was leaking and overflowned.

I then took the extra fluid out and it was better. The brakes were harder and it was more high up.

But it still takes forever ti stop.

Help me!!!!!

Also when i turn the weel there is something squeking, not the brake squek but like metal is rubing againts metal.

Help!!!!!!!!

 

Did you disconnect the lines when you changed the discs? (you didnt need to just curious). If not i dont see any need to bleed the system unless the brakes were duff before or somethings leaking....

 

Maybe you have a leaky piston? did you check for fluid leaks when you fitted the new pads and condition of piston seals / lines?

 

The overflow of brake fluid is normal, but you should have taken the cap off when you did all the brakes, as you have pushed more fluid back into the system by pushing the pistons back to fit the new pads etc. Chances are you had topped it up once before, with worn pads thus theres too much in the system now. (Hopefully you wont have screwed the seal on the top up bottle)

 

 

I do the brakes on all my cars, its pretty normal for them to be a bit light to start with as some pads have a protective coating which has to wear off first, but after a few stops they should be pretty good. (EBC pads are a classic for this)

 

Check for fluid leaks, or bite the bullet and take it too a garage as suggested.....thats the safest option.

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Did you use brake cleaner to clean the disk before fitment, reason for this is that they have a oily residue on them to stop corrosion when in the box. If this gets on the pads from not cleaning them , you might aswell of soaked the pads in oil. Also the metallic noise could be that the pad spring is not fitted tidy and running on the disk itself.

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Thank you guys without your help nothing would be done!!!!!!!!!!

 

Everything is done now the brakes are perfect now.

 

They were crap because i didnt bleed then.

 

The squek (metal againts metal) was the shield of the disk. Because when i was changing the springs i had to press down on the shield to get the springs out.!!!??!!!!!

 

Thanks again

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