28 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBleeding Brakes With PSM
Leading reported evidence
Fill with motul 600 fluid
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
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Read evidence and context
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Performed · outcome unconfirmed
I intend to hook up a Motive PB filled with Motul 600 fluid and then actuate each (ABS) circuit with the appropriate bleeder valves at the proper order of bleeding and collect as per procedure in this thread.
Leading evidence: 'Fill with motul 600 fluid' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill with motul 600 fluid' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Removing the any hard line or replacing a hoses or lines.
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Suggestion
*HINT* Start the car in the driveway and try this out with the e-brake set, rather than, say, merging onto the freeway before verifying that the brakes are functional.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion
I am curious to hear the proper process when using the durametric ?
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Suggestion
If you are not running the ABS/PSM pump using Durametric or a PST2 then - yes it is irrelevant.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Fill with motul 600 fluid
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I intend to hook up a Motive PB filled with Motul 600 fluid and then actuate each (ABS) circuit with the appropriate bleeder valves at the proper order of bleeding and collect as per procedure in this thread.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
*HINT* Start the car in the driveway and try this out with the e-brake set, rather than, say, merging onto the freeway before verifying that the brakes are functional.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
28 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T000231Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
According to the shop manual, when bleeding brakes on cars with PSM you should have a bleeding pressure of 2.0 Bar (29.4 PSI). Is it necessary to use this much pressure? I have a motive bleeder. Thanks.
No, i am talking about PSM, I am just reading the shop manual and it state scars w/o PSM should be bled with 1.5 bar of pressure and cars with PSM should be bled with 2.0bar of pressure. I read the rentech DIY as well and thats why I was asking. If everyone has done it using under 20psi that is the route I will go. Thanks.
Ive had no prob bleeding the brake lines at 20 psi... per rentech diy. But I have done mine in warmer weather... dont know how the fluid reacts in the cold....
I bleed all mine at 1.5bar or less (usually 1-1.25bar) regardless of PSM or not. I have zero issues having the fluid flow properly. Would be interested to hear to reasoning for bumping up to 2bar on PSM cars.
Can you scan and post the shop manual page(s) you are talking about?
You are right!
I did it the old fashion way many times, didn't notice any difference with my brake performance. But now I think about it my PSM does not react as fast as before... maybe 0.01 seconds slower. :P
When you are bleeding the PSM circuit (using Durametric or a PST2) you open the
right front
valve to bleed PSM.
On non-PSM cars (ABS only) you open the
right rear
valve.
If you are not running the ABS/PSM pump using Durametric or a PST2 then - yes it is irrelevant.
If you have replaced ABS or PSM components or had a brake line open to air - then you do need to bleed the ABS/PSM. Otherwise - no.
I just purchased the Durametric tool to bleed the brakes and ABS/PSM lines of a 2010 GT3. Would someone please point me to a detailed procedure for doing this? thanks in advance. I intend to hook up a Motive PB filled with Motul 600 fluid and then actuate each (ABS) circuit with the appropriate bleeder valves at the proper order of bleeding and collect as per procedure in this thread.
What if you accidentally pulled in air from the master cylinder of a PSM/ABS 2004 C2 when your wife was overwatching the front of the master fluid resevoir and it was showing good fluid level, while you were cracking bleed nipples at the rear caliper, just as the back half of the resevoir drew down to air? Not that it happened to me...
Who the hell put a partition in the fluid resevoir that would allow this facade and dupe an unsuspecting shade tree meachanic (OK, magazine reading significant other)? Damn Porsche has to be different even in their fluid resevoirs?!
OK, lesson learned, so after bleeding that caliper till all the air was out and doing a full reperformance of all circuits with another liter of fluid just in case, does the ABS/PSM need special bleeding with Durametric or is it good?
Theoretically speaking that is...
If the brakes feel normal, you got the air out. If the pedal feels like mush, you didn't get the air out.
*HINT* Start the car in the driveway and try this out with the e-brake set, rather than, say, merging onto the freeway before verifying that the brakes are functional.
If you're really paranoid, switch brake fluid colors and bleed until you see new color at all corners plus the clutch. You might want to consider a different / more engaged assistant.
Bingo... wifey was apparently on her union break after already assiting me with 3 other rides on our annual "bleed the fleet" day... second only in popularity to "tax deduction documentation day."
Brakes are firm as morning wood... I'll consider it bled!
The proceedure for bleeding the clutch is unlike any other vehicle I've ever have had either (although I've always done the pump and bleed with assistant and not with a Motive style pressure bleeder). Clutch pedal depressed, turn in circles three times, drink a beer and do the hokey pokey... this car is entertaining to service!
FSM = A MUST HAVE!
I rebuilt the two front calipers on my 01 986. Bled the system with a Motive bleeder, brakes were a little mushy. I re-bled them with a Mity-Vac, still mushy. I am doing the rears very soon.
Do I need to invest in a Durametric? It seems the consensus answer here is yes.
I am curious to hear the proper process when using the durametric ?
Do I start the durametric abs pump before I do the bleeding ? leave it on while bleading ?
I mean how does it work when using the durametric to activate the ABS ?
This is a source reference. Confirm exact model applicability in the original material.
