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> Brake bleeding..., sucks (pun woefully intended)
stateofidleness
post Aug 22 2010, 04:14 PM
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at my wit's end with brake bleeding (who else says "blake breeding" on accident?... ok just me (IMG:style_emoticons/default/smile.gif)) anyways...

tried the old fashioned "get a buddy" method... this helped me find all my leaks... fun.. so after replacing all the lines, the master cylinder and a rear caliper, we tried again (3 weekends into this so far... ) Builds a little pressure, go to next wheel.. try again.. no change, but good flow..

after doing all 4 corners and getting good flow with no air at each one, STILL pedal almost goes all the way to the floor with little pressure...

finally got to that point where you don't mind spending money to make the process easier, so i went to FLAPS and got the MityVac thing... $40 later i get home and go back to work... got the process down and got good flow at each tire again, reservoir staying full throughout... STILL sh*tty pedal feel... so at the time of this writing.. i quit!
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IronHillRestorations
post Aug 22 2010, 05:21 PM
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I too tried the MityVac, and it just doesn't work that well. Pulls air from the threads on the bleeders. Pressure on top of the brake fluid works every time for me, and makes it a one man job.

Here's how I bleed a 914 brake system, from my post back in Mar 05.

Remember the "Search" function is your friend!

Get a spare cap for the brake fluid resevior.
Get a tire valve & stem.
Drill a hole in the center of the resevior cap, the same size as the hole in a wheel (or measure the narrow part of the tire valve).
Pull the valve stem through the hole.
Remove the plastic screen in the resevior.
Fill the brake resevior completely, not to the fill line, all the way full to the bottom of the tube that holds the plastic screen.
Put on your new modified pressure bleeder cap.
Drain your air tank to 10 psi, for cheaper compressors setting the regulator at 10 psi may not work. If you put too much pressure in the system, you'll blow off the blue lines that connect the supply lines to the resevior, or worse.
Take a clip on air chuck and clip it on your new pressure bleeder cap.
Bleed the brakes, starting at the furthest bleeder from the master cyl, and finish at the bleeder nearest the master cyl.
Bleeding sequence (RR-LR-RF-LF) EDITED FROM ORIGINAL POST
Pump the pedal hard about ten times and repeat the proceedure.
Do not get brake fluid on painted surfaces it will ruin them.
If the pressure bleeder cap retains pressure, bleed it down before taking it off the resevior.
This works very well, and makes it a one person job.
Replace brake fluid every two years.
Properly discard used brake fluid.
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Posts in this topic
stateofidleness   Brake bleeding...   Aug 22 2010, 04:14 PM
Spoke   Hows the venting clearance of the rear brakes? If ...   Aug 22 2010, 04:48 PM
9146986   I too tried the MityVac, and it just doesn't w...   Aug 22 2010, 05:21 PM
Vacca Rabite   If you have speed bleeders, try the long tube meth...   Aug 22 2010, 07:04 PM
swl   must add a me too to the vacuum not working. Just...   Aug 22 2010, 07:37 PM
930cabman   must add a me too to the vacuum not working. Jus...   Jun 3 2021, 08:16 AM
davesprinkle   The long tube method saved my marriage, no joke. ...   Aug 22 2010, 07:43 PM
stateofidleness   dammit, i thought the MityVac one was THE one, and...   Aug 22 2010, 07:44 PM
Vacca Rabite   also, i have one rear caliper that has 2 valves,...   Aug 23 2010, 06:57 AM
stateofidleness   would this one work on the 914: http://www.autopar...   Aug 22 2010, 07:57 PM
stateofidleness   oh, i was following the pelican article: "If...   Aug 23 2010, 07:13 AM
pcar916   oh, i was following the pelican article: "I...   Aug 23 2010, 07:32 AM
twistedstang   oh, i was following the pelican article: ...   Apr 5 2019, 09:55 AM
Garland   1. Bleed nipples are always on top. Air bubbles ...   Jul 21 2020, 07:19 PM
stateofidleness   think i'm gonna order the Motive, but not sure...   Aug 23 2010, 07:37 AM
stepuptotheMike   Don't even touch the bottom bleeder valve. Th...   Aug 23 2010, 07:39 AM
stateofidleness   ordered! got an email about a 10% discount the...   Aug 23 2010, 07:55 AM
pcar916   Best price is at Racer Wholesale Parts. http://w...   Aug 23 2010, 07:55 AM
Vacca Rabite   Note: If you get the universal kit with all of th...   Aug 23 2010, 07:59 AM
stateofidleness   adapters can be purchased separate as needed right...   Aug 23 2010, 08:05 AM
underthetire   I've done brakes several times with the mighty...   Aug 23 2010, 08:57 AM
Drums66   I've done brakes several times with the might...   Aug 23 2010, 04:16 PM
jeffdon   Don't forget to bleed the proportioning valve....   Aug 23 2010, 04:10 PM
Ductech   Here is my two cents .... Yes these are all good m...   Aug 23 2010, 04:26 PM
type47   Question I have is about setting the brake pedal d...   Oct 8 2010, 09:59 AM
ctc911ctc   All Brake GuRus, I have read all of the articles a...   Apr 5 2019, 09:17 AM
76-914   All Brake GuRus, I have read all of the articles ...   Apr 5 2019, 02:45 PM
mepstein   I just crack the fittings at the mc instead of rem...   Apr 5 2019, 10:03 AM
mlindner   I just did mine after 25 years of all being apart....   Apr 7 2019, 06:57 AM
Superhawk996   I've had good luck in the past using a MightyV...   Apr 7 2019, 10:31 AM
Ansbacher   DON'T ignore bleeding those lower valves! ...   Jun 3 2021, 11:42 AM
rhodyguy   Adapting a larger container that could attach to t...   Jun 3 2021, 11:59 AM
Al Meredith   I think it has been mentioned here before but I re...   Jun 3 2021, 03:52 PM
930cabman   Our 1975 project was missing a rear caliper, both ...   Jun 3 2021, 06:33 PM
andys   When vacuum bleeding, I put grease around the thre...   Jun 4 2021, 11:59 AM


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