What's involved in a dealership brake flush?
11-08-2016, 06:54 PM
#46
Not sure where the hostility is coming from. Brakes are brakes and not a whole lot difference between them even compared to most Porsch-As. I thought we were talking about brake bleeding for the track.
Sure, there are two in the front, but the second one is so quick it almost doesn't count. Bleed the outside one first, as fluid enters the back. Move the hose, crack the inside one for a few seconds and done - all you are doing there is removing the fluid from the middle of the back caliper to the top. The calipers, and even the brake lines don't hold much, the bulk of the fluid is in the MC.
It helps to keep up on the fluid maintenance so one doesn't have to be so picky. A little bit of six month old fluid in the system, so what? It's a lot better than leaving a little bit of 2 year old fluid in there.
-Mike
Sure, there are two in the front, but the second one is so quick it almost doesn't count. Bleed the outside one first, as fluid enters the back. Move the hose, crack the inside one for a few seconds and done - all you are doing there is removing the fluid from the middle of the back caliper to the top. The calipers, and even the brake lines don't hold much, the bulk of the fluid is in the MC.
It helps to keep up on the fluid maintenance so one doesn't have to be so picky. A little bit of six month old fluid in the system, so what? It's a lot better than leaving a little bit of 2 year old fluid in there.
-Mike
11-08-2016, 08:30 PM
#47
No hostility. The OP is talking about a Porsche. Just figured that anybody who answered would be OCD enough to discuss that mark and list instructions that wouldn't confuse the uninitiated. To me not listing the second bleeder is ..... lets just say I'm OCD and would've listed it when providing instructions as well as which order.
From your answer I now know that your rears have 1 and the fronts 2 bleeders. I didn't know that before.
From your answer I now know that your rears have 1 and the fronts 2 bleeders. I didn't know that before.
11-08-2016, 08:55 PM
#48
I guess I'm not that OCD, which is progress as somehow after high school I became a perfectionist and I've been working to correct ever since. I'd actually forgotten the fronts have two on this M3, as my other M3 only had one in the front. 
I don't think the camera did the OP any favors. Without it, he likely would not have had any doubt. With it, and its Nixonian gap, he has doubt that short of doing the brake flush again, is difficult to overcome. That said, I don't use professional mechanic much at all because my track record with them has always been terrible. Nobody cares for your car like you will - the mechanic has to work on other peoples cars and eat too and compete with the other mechanics out there, some more honest than others.
-Mike
I don't think the camera did the OP any favors. Without it, he likely would not have had any doubt. With it, and its Nixonian gap, he has doubt that short of doing the brake flush again, is difficult to overcome. That said, I don't use professional mechanic much at all because my track record with them has always been terrible. Nobody cares for your car like you will - the mechanic has to work on other peoples cars and eat too and compete with the other mechanics out there, some more honest than others.
-Mike
11-09-2016, 12:49 AM
#49
inboard bleeders first, outboard bleeders second
11-17-2016, 09:21 AM
#50
I don't think the camera did the OP any favors. Without it, he likely would not have had any doubt. With it, and its Nixonian gap, he has doubt that short of doing the brake flush again, is difficult to overcome. That said, I don't use professional mechanic much at all because my track record with them has always been terrible. Nobody cares for your car like you will - the mechanic has to work on other peoples cars and eat too and compete with the other mechanics out there, some more honest than others.
I've mentioned it before... I've never had any reason to suspect they'd lie to me. I've got a good relationship there so far as I know.
I VERY much appreciate all the input here guys!! I'll dig this thread back up in the spring if I get any new info that I think will be helpful.
11-17-2016, 09:55 AM
#51
Race Director
dealer is 100% full of ****.
No way in hell that they could have hooked up a power bleeder, flushed all 4 brake lines, and adjusted the fluid level in 7 minutes. And thats assuming they hooked up the bleeder literally the second the dash cam turned off. Not even if they opened bleeders on all the wheels at the same time.
They are LYING to you, as most dealers do.
No way in hell that they could have hooked up a power bleeder, flushed all 4 brake lines, and adjusted the fluid level in 7 minutes. And thats assuming they hooked up the bleeder literally the second the dash cam turned off. Not even if they opened bleeders on all the wheels at the same time.
They are LYING to you, as most dealers do.
11-17-2016, 11:01 AM
#52
Rennlist Member
dealer is 100% full of ****.
No way in hell that they could have hooked up a power bleeder, flushed all 4 brake lines, and adjusted the fluid level in 7 minutes. And thats assuming they hooked up the bleeder literally the second the dash cam turned off. Not even if they opened bleeders on all the wheels at the same time.
They are LYING to you, as most dealers do.
No way in hell that they could have hooked up a power bleeder, flushed all 4 brake lines, and adjusted the fluid level in 7 minutes. And thats assuming they hooked up the bleeder literally the second the dash cam turned off. Not even if they opened bleeders on all the wheels at the same time.
They are LYING to you, as most dealers do.
11-17-2016, 12:46 PM
#53
dealer is 100% full of ****.
No way in hell that they could have hooked up a power bleeder, flushed all 4 brake lines, and adjusted the fluid level in 7 minutes. And thats assuming they hooked up the bleeder literally the second the dash cam turned off. Not even if they opened bleeders on all the wheels at the same time.
They are LYING to you, as most dealers do.
No way in hell that they could have hooked up a power bleeder, flushed all 4 brake lines, and adjusted the fluid level in 7 minutes. And thats assuming they hooked up the bleeder literally the second the dash cam turned off. Not even if they opened bleeders on all the wheels at the same time.
They are LYING to you, as most dealers do.
11-17-2016, 09:29 PM
#54
Three Wheelin'
Weasel,
The dealer is there to please you, not the other way around. So don't be afraid to push back if you're not 100% satisfied that they did the work properly.
As there appears to be continued doubt in your mind, I think you should ask them to do another brake flush with you present. If they refuse to do it gratis say thanks and get it done somewhere else. After all, you want total peace of mind if you're doing 130 mph on the front straight breaking hard for turn one!
The dealer is there to please you, not the other way around. So don't be afraid to push back if you're not 100% satisfied that they did the work properly.
As there appears to be continued doubt in your mind, I think you should ask them to do another brake flush with you present. If they refuse to do it gratis say thanks and get it done somewhere else. After all, you want total peace of mind if you're doing 130 mph on the front straight breaking hard for turn one!
11-18-2016, 10:18 AM
#55
Weasel,
The dealer is there to please you, not the other way around. So don't be afraid to push back if you're not 100% satisfied that they did the work properly.
As there appears to be continued doubt in your mind, I think you should ask them to do another brake flush with you present. If they refuse to do it gratis say thanks and get it done somewhere else. After all, you want total peace of mind if you're doing 130 mph on the front straight breaking hard for turn one!
The dealer is there to please you, not the other way around. So don't be afraid to push back if you're not 100% satisfied that they did the work properly.
As there appears to be continued doubt in your mind, I think you should ask them to do another brake flush with you present. If they refuse to do it gratis say thanks and get it done somewhere else. After all, you want total peace of mind if you're doing 130 mph on the front straight breaking hard for turn one!
11-22-2016, 04:25 PM
#58
Three Wheelin'
A quick google search shows a machine like this. The note also says you can do a flush in 10min. I'm sure there is a machine for the dual valves on each caliper. Also, Porsche probably turbo charged the machines the dealers use
http://www.toolpan.com/Mahle-BFX-2--...FZJMDQodenMNzQ
11-22-2016, 04:47 PM
#59
I like how everyone is talking about the Motive bleeder. Real mechanics use a machine that can send fluid through the whole system at once.
A quick google search shows a machine like this. The note also says you can do a flush in 10min. I'm sure there is a machine for the dual valves on each caliper. Also, Porsche probably turbo charged the machines the dealers use
http://www.toolpan.com/Mahle-BFX-2--...FZJMDQodenMNzQ
A quick google search shows a machine like this. The note also says you can do a flush in 10min. I'm sure there is a machine for the dual valves on each caliper. Also, Porsche probably turbo charged the machines the dealers use
http://www.toolpan.com/Mahle-BFX-2--...FZJMDQodenMNzQ
If I thought they ripped me off I'd have posted the video publicly and cried foul. That wasn't my intention here. I just wanted opinions based on the experience.
I sincerely believe the work was done. I'm just in the dark as to HOW it was done.
11-22-2016, 07:02 PM
#60
I'm keeping an open mind. I'll have a conversation with the tech in the spring to find out about how he did it.
If I thought they ripped me off I'd have posted the video publicly and cried foul. That wasn't my intention here. I just wanted opinions based on the experience.
I sincerely believe the work was done. I'm just in the dark as to HOW it was done.
If I thought they ripped me off I'd have posted the video publicly and cried foul. That wasn't my intention here. I just wanted opinions based on the experience.
I sincerely believe the work was done. I'm just in the dark as to HOW it was done.
I dunno dude...all the evidence you have is contrary to the work being done.
