Brakes Smoking - ThreePoints

Iowaner · 06-03-2010, 10:30 PM

I also am having a problem of when I am in drive but stopped the brakes start smoking really bad.

I think it's might be because of the accerator/throttle being stuck but I don't understand why that would make the brakes smoke when stopped?

Austin · 06-04-2010, 08:01 PM

Sounds to me like the brake is seized.

mbbuff · 06-04-2010, 08:38 PM

Sometimes on the older Benz's one or more brakes will not release properly. This is an old age related problem that is easily fixed. What happens is the brake hose(s) going to the caliper(s) will collapse on release, keeping the brake partially or completely applied. I had this happen on my 250S, but it just pulled hard to the bad side. I have since replaced all hoses on both of my vintage Benz's. No more problems, no more worry. Also, check the pads for wear. Both wheels (per axle) should have fairly even wear. If one is worn much more, there is likely a problem with that side.

Austin · 06-08-2010, 04:30 PM

Quote:

Originally Posted by mbbuff

Sometimes on the older Benz's one or more brakes will not release properly. This is an old age related problem that is easily fixed. What happens is the brake hose(s) going to the caliper(s) will collapse on release, keeping the brake partially or completely applied. I had this happen on my 250S, but it just pulled hard to the bad side. I have since replaced all hoses on both of my vintage Benz's. No more problems, no more worry. Also, check the pads for wear. Both wheels (per axle) should have fairly even wear. If one is worn much more, there is likely a problem with that side.

If I'm out test driving is there any way to get it to release?

Saya · 06-08-2010, 04:58 PM

Not on the fly and not if it's actually seized. I say that but some one is going to come up behind me and prove me wrong.

mbbuff · 06-09-2010, 03:08 AM

Austin, I think if it's gotten to the point where it won't release at all, someone has let it go way too long. This doesn't happen overnight. There are warning symptoms along the way, such as when mine started pulling to one side when braking, and there were no problems with the brakes/calipers. If this were to happen, and a collapsed hose was indeed the problem, I would try to either open the bleed screw on the caliper or loosen the hose at the caliper to relieve the pressure. It would more than likely happen again the next time you applied the brakes, unless perhaps you could avoid it by very light braking. Don't know if that would work though.

Austin · 06-09-2010, 04:17 PM

Awesome info mbbuff. One of my fears when I'm test dirivng a car is it breaking down, having the brakes seize, etc, and have found the majority of sellers won't clue you in to those things.

mbbuff · 06-09-2010, 05:02 PM

Austin, after thinking about it a little longer, I can't imagine the brake NOT EVENTUALLY releasing by itself. To remain on the collapse would have to be so tight as to stop any bleed back through the hose. I don't think that would happen, but I guess release could take several minutes.

Austin · 06-17-2010, 09:15 PM

So if it doesn't have a slow release, then it probably won't release at all?

mbbuff · 06-17-2010, 11:45 PM

My guess would be that if it doesn't release at all there is another problem. I can't imagine a hose, by itself, collapsing so tightly that it wouldn't eventually release pressure. Hope I said that right??

06-03-2010, 10:30 PM	#1
Iowaner Junior Member Join Date: Jun 2010 Posts: 5	Brakes Smoking I also am having a problem of when I am in drive but stopped the brakes start smoking really bad. I think it's might be because of the accerator/throttle being stuck but I don't understand why that would make the brakes smoke when stopped?

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06-04-2010, 08:01 PM	#2
Austin Administrator Join Date: Jun 2010 Posts: 94	Sounds to me like the brake is seized.

06-04-2010, 08:38 PM	#3
mbbuff Member Join Date: May 2010 Posts: 40	Sometimes on the older Benz's one or more brakes will not release properly. This is an old age related problem that is easily fixed. What happens is the brake hose(s) going to the caliper(s) will collapse on release, keeping the brake partially or completely applied. I had this happen on my 250S, but it just pulled hard to the bad side. I have since replaced all hoses on both of my vintage Benz's. No more problems, no more worry. Also, check the pads for wear. Both wheels (per axle) should have fairly even wear. If one is worn much more, there is likely a problem with that side.

06-08-2010, 04:58 PM	#5
Saya Junior Member Join Date: Jun 2010 Posts: 10	Not on the fly and not if it's actually seized. I say that but some one is going to come up behind me and prove me wrong.

06-09-2010, 03:08 AM	#6
mbbuff Member Join Date: May 2010 Posts: 40	Austin, I think if it's gotten to the point where it won't release at all, someone has let it go way too long. This doesn't happen overnight. There are warning symptoms along the way, such as when mine started pulling to one side when braking, and there were no problems with the brakes/calipers. If this were to happen, and a collapsed hose was indeed the problem, I would try to either open the bleed screw on the caliper or loosen the hose at the caliper to relieve the pressure. It would more than likely happen again the next time you applied the brakes, unless perhaps you could avoid it by very light braking. Don't know if that would work though.

06-09-2010, 04:17 PM	#7
Austin Administrator Join Date: Jun 2010 Posts: 94	Awesome info mbbuff. One of my fears when I'm test dirivng a car is it breaking down, having the brakes seize, etc, and have found the majority of sellers won't clue you in to those things.

06-09-2010, 05:02 PM	#8
mbbuff Member Join Date: May 2010 Posts: 40	Austin, after thinking about it a little longer, I can't imagine the brake NOT EVENTUALLY releasing by itself. To remain on the collapse would have to be so tight as to stop any bleed back through the hose. I don't think that would happen, but I guess release could take several minutes.

06-17-2010, 09:15 PM	#9
Austin Administrator Join Date: Jun 2010 Posts: 94	So if it doesn't have a slow release, then it probably won't release at all?

06-17-2010, 11:45 PM	#10
mbbuff Member Join Date: May 2010 Posts: 40	My guess would be that if it doesn't release at all there is another problem. I can't imagine a hose, by itself, collapsing so tightly that it wouldn't eventually release pressure. Hope I said that right??

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