Shop Press

Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle.

From the creative minds at:

FEATURE STORY

Hot Off the Press

A different type of timed event: the Bobby Bosch Relay Race

I’ll hazard a guess you’re familiar with the 24 Hours of Lemons. If not, it’s endurance racing for Joe Sixpack on a severely tight budget ($500). Ridiculous paint jobs are de rigueur. Costumes are encouraged. Everyone sandbags and cheats and tries to fudge the budget...

How to use a lockout kit (VIDEO)

If you work on cars for a living or you’re a diehard gearhead, odds are excellent that people look to you when some basic automotive snafus need to be handled. I’m sure those who know you have asked you to help with the following items: Reviewing an estimate Jumping a...

Drag racing semi-trucks (VIDEO)

Hi, my name is Lemmy and I enjoy the inappropriate application of power. It’s the lighter side of our mutual profession, I feel. I’ve written before about keeping your mojo flowing if the biz of fixing stuff is wearing you down. Here’s another way to do that: watch...

Bump steer – ASE practice questions (VIDEO)

Description All of the following could cause bump steer EXCEPT: A) Incorrectly mounted steering rack B) Worn idler arm C) Worn center link D) Incorrect camberMore ASE Practice Questions

When NOT selling helps business

When I was a wee sprat in my first automotive job selling service, I was beleaguered by a tech in the shop who wrote thorough, lengthy estimates. He would occasionally blow up at me for not selling enough, going so far once as to accuse me of not even trying to sell...

7 low-tech tips to help bleed difficult brakes

by | Dec 6, 2021

Bleeding brakes is one of those jobs most of us know how to do, but when a hard-to-bleed system pops up, experienced techs have a few additional tricks up their sleeves to help get the job done. You can certainly vacuum bleed or power bleed if you have the equipment, but if you do not, here are a few strategies that may be another arrow in your quiver. Don’t pull out your hair over a little bit of air!

Bench bleed first

We probably all do this, but if you aren’t bench bleeding before you install, you should. Driving air out of the system before the master cylinder is bolted in place is easy and effective.

If you have time, try gravity bleeding

In terms of sheer ease, a gravity bleed is about as simple as it gets. Fill the master and reservoir, put the car in the air, and leave the bleeders open until you see fluid arrive. Close the bleeders as you see them begin to pass brake fluid.

Move the calipers

Especially for vehicles with weird bends or bleeders that are not at the highest point on the caliper, simply unbolting the caliper and moving it so the bleeder becomes the high point works wonderfully for pockets of trapped air.

Work front to back

Starting at the master, you can loosen fittings working your way to the rear of the car. Treat each fitting like a bleeder, and you may notice your pedal firms right up simply because you’re not trying to drive the air out nearly so far.

Tap tap tap!

While you’re undercar trying the previous tip, throw this one into the mix, too! Tap those lines and hoses before and during the pressure build. Sometimes the small vibrations can knock clinging air bubbles free.

Leave it overnight

If you’ve got the time and you’ve got some pedal, but it’s not perfect, pump up the brakes, then grab a 2×4 (or something else suitable) to wedge the brake pedal down overnight. There are various theories as to why this works, but it definitely does. Often the rock-hard pedal in the morning doesn’t need further effort on your part at all!

Push from the other side

Sometimes pushing pads back into calipers after a brake fluid drain and fill can get the air bubbles moving in a way fluid pressure can’t, because the pressure is coming from another source internally.

The next time you’re stuck on a hard-to-bleed vehicle, see if one of these methods helps you out. They’re low-tech and high-yield, and just might keep you from getting stuck in a flat-rate time-suck.

The articles and other content contained on this site may contain links to third party websites. By clicking them, you consent to Dorman’s Website Use Agreement.

Related Articles

Shop Press Comment Policy

Participation in this forum is subject to Dorman’s Website Terms & Conditions. Please read our Comment Policy before commenting.

Subscribe
Notify of
guest
0 Comments
Inline feedback
View all comments

Get Articles In Your Inbox

Subscribe to receive a monthly email summary of our latest Shop Press stories.

Shop Press

I agree to the above privacy statement and T&Cs

Thanks! You're now subscribed.