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What's involved in a dealership brake flush?

 
Old 11-07-2016, 07:21 PM
  #31  
JayG
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^^^^^
Its Blue that is no longer available and it been a couple of years

When was the last time you flushed your brakes Dan ???
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Old 11-07-2016, 10:28 PM
  #32  
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Originally Posted by ExMB View Post
Is CAN different than the US because here "blue" is no longer available?
I was wrong and you are correct Blue no longer avail.
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Old 11-07-2016, 10:41 PM
  #33  
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I Know of 2 ways to bleed the brakes.

1) You open the reservoir.
Open a bleed screw and pump the pedal.
Close bleed screw.
Top off reservoir as needed.
Do this at all 4 wheels.

2) Attach pressurized Motive to reservoir.
Open bleed screw at wheel.
Close bleed screw at wheel.
Repeat for all 4 wheels

In both cases, fluid is pushed from reservoir to the wheel's bleeder.
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Old 11-08-2016, 10:41 AM
  #34  
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Talked to my service advisor. She's going to double-check with the tech to ensure it wasn't missed.
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Old 11-08-2016, 01:48 PM
  #35  
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I got confirmation from my service advisor that they did the brake flush. She said he did it while the car was running to check the oil.

So anything that involves work under the hood must have happened in that 7 minute window that the camera didn't capture.

I don't think they'd make that up. I have no reason to believe they'd be anything but honest with me. So does this seem plausible?
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Old 11-08-2016, 01:57 PM
  #36  
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If you have a gap in your recording, then you don't know.

7 minutes is more than enough time with a lift and pressure bleeder - I've done brake flush in my driveway removing one wheel at at time in 15-20 minutes.

-Mike
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Old 11-08-2016, 03:06 PM
  #37  
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Originally Posted by TXE36 View Post
If you have a gap in your recording, then you don't know.

7 minutes is more than enough time with a lift and pressure bleeder - I've done brake flush in my driveway removing one wheel at at time in 15-20 minutes.

-Mike
I don't doubt you did it in 15-20 but I do not believe a dealer did it (remember they have to actuate the ABS system too) in 7 minutes.. No friggin way.
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Old 11-08-2016, 03:35 PM
  #38  
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Originally Posted by Gary R.
I don't doubt you did it in 15-20 but I do not believe a dealer did it (remember they have to actuate the ABS system too) in 7 minutes.. No friggin way.
^^^This
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Old 11-08-2016, 03:39 PM
  #39  
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And if they did it while car was idling to check oil level, as reported, the dashcam would have come on and recorded them doing it.
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Old 11-08-2016, 03:48 PM
  #40  
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Originally Posted by Gary R. View Post
I don't doubt you did it in 15-20 but I do not believe a dealer did it (remember they have to actuate the ABS system too) in 7 minutes.. No friggin way.
I don't believe you need to activate the ABS for a standard flush, only when you're replacing the master cylinder.
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Old 11-08-2016, 04:07 PM
  #41  
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Originally Posted by HoBoJoe View Post
I don't believe you need to activate the ABS for a standard flush, only when you're replacing the master cylinder.
Then you're leaving old fluid in the system aren't you?
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Old 11-08-2016, 04:08 PM
  #42  
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Originally Posted by TXE36 View Post
If you have a gap in your recording, then you don't know.

7 minutes is more than enough time with a lift and pressure bleeder - I've done brake flush in my driveway removing one wheel at at time in 15-20 minutes.

-Mike
No flame, but I have to call BS on this unless you are Speedy Gonzales and have everything prepped, set up. The car has to be in the air, the access with fluid has to be set up - hooked up, fluid level has to checked constantly - refilled, popping the rubber covers - opening and closing bleeders, time for fluid to migrate through the lines, etc, etc, etc.

I'm sure it seems that only a short time has passed but when you actually time it with the work involved I believe you'd be surprised.
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Old 11-08-2016, 05:15 PM
  #43  
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  • Fill Motive Power Bleeder 1L new fluid
  • Attach to full master cylinder and pump up pressure.
  • Jack and remove RR wheel
  • Attach hose and drain pan, crack bleeder. Wait for fluid to drain to first hash mark. This is the long one, about 5-7 minutes.
  • Close bleeder, put wheel back on, drop Jack
  • Jack and remove LR wheel
  • Attach hose and drain pan, crack bleeder. Wait for fluid to drain to second hash mark. About 5 minutes.
  • Close bleeder, put wheel back on, drop Jack
  • Jack and remove RF wheel
  • Attach hose and drain pan, crack bleeder. Wait for fluid to drain to third hash mark. About 3 minutes.
  • Close bleeder, put wheel back on, drop Jack
  • Jack and remove LF wheel
  • Attach hose and drain pan, crack bleeder. Wait for fluid to drain to empty. Bubbles will start in bleeder to MC hose. About 3 minutes.
  • Close bleeder, put wheel back on, drop Jack
  • Remove bleeder, use any remaining fluid to top up MC, usually not necessary.
  • Fin

    With a decent jack and cordless impact, installing or removing a wheel is a 30 second operation. I put hash marks on the bleeder reservoir such that most of the fluid is used for the RR, as it is the longest, then a bit less for the LR, then the fronts. I change the fluid often enough that color change is difficult to see.

    I've never cycled the ABS. The brake line plumbing goes through the abs pump, I just don't see a lot of fluid getting trapped there. Plus the ABS usually goes off at least once during a weekend.

    With a lift, more professional bleeder, and the ability to crack all four bleeders at once, I can see it being very quick for a pro.

    The $50 for the Motive bleeder was money well spent.

    Ok, you got me, add another minute to torque the lugs.

    -Mike

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Old 11-08-2016, 06:06 PM
  #44  
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Only 1 bleeder per? You ignore the other one or you don't have a second one?

Afterall this is a thread about Porsche's, not some other mark.
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Old 11-08-2016, 06:54 PM
  #45  
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I turkey baster out old fluid first and then top off and then hook up Motive. It takes me about an hour to do all 4.
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