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Brakes smoke after being changed. Ok or not?

  • Thread starter Thread starter pleasehelp
  • Start date Start date Jul 23, 2006

pleasehelp

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Mar 11, 2003
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Jul 23, 2006
#1
  • Jul 23, 2006
  • #1
Not on a Mustang but on my gfs sisters 01+ sunfire. Just changed her front brakes (pads & rotors) and took it out for a test drive and about 10 mins into it there was smoke coming out from her wheelwells. I did wipe the rotors with a paper towel before install. This was my first full brake job you could say, but I think I did it right. is the smoke part of the break in? It wasn't smoking that bad but enough to notice it.
 

fgtmustang95

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Jul 23, 2006
#2
  • Jul 23, 2006
  • #2
I dont think so.
 

mo_dingo

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Aug 26, 2003
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Jul 23, 2006
#3
  • Jul 23, 2006
  • #3
If you overwork the brakes from the get go, they will smoke.

You have to bedd them properly to get the surface prepped. Do a search. I just drive to 35, apply brakes at 1/4 of full pressure, then drive around in 1st gear to cool the brakes off, not touching the brake pedal. Then after a minute of 2, I do another 35-0 and cooldown and repeat.
Scott
 

HISSIN50

"How long does it take to get help in here?
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#4
  • Jul 24, 2006
  • #4
Did the rotors spin freely (or is that thing FWD?) after the install?

If you have an IR thermometer, you can take a reading of each caliper to see how they compare. A bad slide pin or caliper can cause binding/hanging, which creates heat and eventually smoke.


Good luck.
 

94-302-vert

Active Member
Aug 16, 2004
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Jul 24, 2006
#5
  • Jul 24, 2006
  • #5
actual smoke or just stench?

stench is OK while they are breaking in, smoke is not.
 

gcomfx.com

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Jul 24, 2006
#6
  • Jul 24, 2006
  • #6
Do they smoke if you don't use the brakes? Can you downshift and then use the emergency brake (rear brakes) to stop, then see if the fronts still smoke?

I painted mine and clear coated them. No smoke, just a funk smell and they grabbed like a ****** the first couple of times I used the brakes at 10mph. LOL
 

1TallMF

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#7
  • Jul 24, 2006
  • #7
Did you clean the rotors and pads with brake cleaner when you installed them? They would have to be quite nasty to actually smoke from this, but grease on a brake rotor can cause other problems. If it was getting hot enough to smoke, you would be able to tell by putting your hand on or near the wheel, you would feel alot of heat coming off of the brakes. If thats the case, check the slider pins on the caliper, as they are probably not releasing the caliper properly. I had this happen, but unfortunately the brake fluid boiled-over before I noticed what was happening

If it isn't really getting that hot, but just smoking and stinking, just watch it for a few days and see if it gets better or worse.
 

The Green GT

No 13 year olds are safe around me.
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Jan 8, 2006
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Jul 24, 2006
#8
  • Jul 24, 2006
  • #8
When I changed the barakes on my truck, the calipers locked up and I had to replace them. It smoked and smelled really bad. Did you have to turn the caliper piston down or was it a regular one where you could just use a c-clamp?
 

pleasehelp

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Jul 24, 2006
#9
  • Jul 24, 2006
  • #9
All I did was wipe the rotors with a paper towel. Didn't use brake cleaner. On her car, I had to unscrew two bolts out in order to take the whole caliper off completely. It would not slide open up with unbolting just one. Then the pads just clipped on with their built in clips. I did grease behind the pads so they wouldn't make noise. This grease did not get on the rotors. Oh, and I used a couple of C-clamps and an old pad to force the piston back into the caliper.

When I was out test driving it, I didn't notice any slowing down from the brakes clamping down. I did put my hand close to the wheels and didn't feel any major heat coming off of them. I'm hoping maybe it was just the factory lube they put on the rotors. Maybe I didn't clean them as good as I should've.

I tried text messaging her to see how it went today but she didn't respond....that's good news, right?
 

The Green GT

No 13 year olds are safe around me.
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Jul 24, 2006
#10
  • Jul 24, 2006
  • #10
If you cant FEEL them actually breaking then they are prolly fine. When brakes lock up you can deffinately feel it.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
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Jul 24, 2006
#11
  • Jul 24, 2006
  • #11
For future reference, a C clamp is not a wise idea. If forced to use one, put a chunk of wood behind the rear of the caliper.

The piston retracting tools use the claw in the caliper housing (where the outer pad rests) as the means of leverage, which is better for the caliper if the piston is starting to seize (and hard to retract). I've had my share of seized calipers and rebuilt a few that were otherwise not easily found in the aftermarket (motorcycles, old Euro cars, etc).
I dont think any of that mattered - it was just info.

How did your slide pins look? If they are chewed up or resistive, it very much CAN make a caliper drag and cause issues. If they're cheap, it's often best to get new ones with each brake pad change. I used to clean them with #00 steel wool and grease them until I learned that many have a sacrificial coating to make them slippery. Once that's gone, it's like cookin with a teflon coated pot that has the teflon worn off (exact same principle).


If you're worried, I'd get ahold of her. I'd want to know the brakes didnt overheat and fail for peace of mind. Or drive by her place and make sure the car is there [if it's late]. Just a couple ideas there if it's buggin you.

Good luck.
 

drakesdad

Member
Jul 29, 2005
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Oregon OHIO
Jul 24, 2006
#12
  • Jul 24, 2006
  • #12
HISSIN50 said:
For future reference, a C clamp is not a wise idea. If forced to use one, put a chunk of wood behind the rear of the caliper.

The piston retracting tools use the claw in the caliper housing (where the outer pad rests) as the means of leverage, which is better for the caliper if the piston is starting to seize (and hard to retract). I've had my share of seized calipers and rebuilt a few that were otherwise not easily found in the aftermarket (motorcycles, old Euro cars, etc).
I dont think any of that mattered - it was just info.

How did your slide pins look? If they are chewed up or resistive, it very much CAN make a caliper drag and cause issues. If they're cheap, it's often best to get new ones with each brake pad change. I used to clean them with #00 steel wool and grease them until I learned that many have a sacrificial coating to make them slippery. Once that's gone, it's like cookin with a teflon coated pot that has the teflon worn off (exact same principle).


If you're worried, I'd get ahold of her. I'd want to know the brakes didnt overheat and fail for peace of mind. Or drive by her place and make sure the car is there [if it's late]. Just a couple ideas there if it's buggin you.

Good luck.
Click to expand...
View attachment 453255
JT's first two "brake jobs"......replaced the 2x4 to pull against..........
Joke JT.....I love ya man..........couldn't resist.....
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Jul 25, 2006
#13
  • Jul 25, 2006
  • #13
drakesdad said:
JT's first two "brake jobs"......replaced the 2x4 to pull against..........
Joke JT.....I love ya man..........couldn't resist.....
Click to expand...
Will, is one of those guys really named Chat?

That's funny stuff!

Actually, my first two brake jobs were on stone wheels. What a pain to balance the wheels afterwards.
 
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