Braking system - Team Camaro Tech
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post #1 of 12 (permalink) Old May 25th, 18, 11:29 PM Thread Starter
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Braking system

so, it is 1:30 am in Texas and I am posting questions for morning. So, there are multiple questions.
We replaced all rear shoes, springs, wheel cylinders and master cylinder. So:
1) when we pump brakes, the dash lights illuminate (speedo / tach lights). What would cause the lights to go when the brake is pressed?
2) We have the new master cylinder on, filled with fluid. We pumped the brakes 100 times and bubbles stop coming out of MC. We cracked bleeder valve on passenger rear and get no fluid. We have sealed everything and pumped and pumped and get nothing. So, what is process of cleaning air out? I get no peddle resistance anywhere. Could my rear brake lines be clogged? The "T" fittings on the pumpkin be jacked up?

My buddy says he has never had one do this, any suggestions as how to clean out air or whatever is going on?

Thanks
John

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post #2 of 12 (permalink) Old May 26th, 18, 02:36 AM
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Re: Braking system

did you bench bleed the master cylinder?
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post #3 of 12 (permalink) Old May 26th, 18, 04:16 AM
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Re: Braking system

You say you sealed the system. I believe you have to get a squirt of brake fluid at the rear right, then rear left, then front right, and then front left to get all the air out.

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post #4 of 12 (permalink) Old May 26th, 18, 04:45 AM
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Re: Braking system

Quote:
Originally Posted by flat tire View Post
did you bench bleed the master cylinder?
X2 on the bench bleeding.

I have a reverse bleeder here you can borrow if you canít get it bled after bench bleeding the master. You could always resort to gravity bleeding it too.

Don

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post #5 of 12 (permalink) Old May 26th, 18, 06:03 AM
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Re: Braking system

Open bleeder, press down on pedal and hold, close bleeder, release pedal.
Repeat as needed for bleeding.
Continue to all wheels as suggested.

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post #6 of 12 (permalink) Old May 26th, 18, 06:30 AM
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Re: Braking system

Always a pita when changing a master cylinder.

Bench bleed the MC first.
Sometimes it takes a while to bleed the system.
Reverse bleeding does work faster when you replace a MC and no air in the system, but sounds like air is in and now will take a bit to get it out.
Also, start at the farthest point bleeding and work closer as the air is out.

Now, for the lights lighting up, sounds like a short or bad ground.

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post #7 of 12 (permalink) Old May 26th, 18, 06:37 AM
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Re: Braking system

Are you bleeding correct an per Everett?

You can't just pump and pump. You have to open bleeder, push to floor, close bleeder, pedal up and repeat.

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post #8 of 12 (permalink) Old May 26th, 18, 06:56 AM
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Re: Braking system

Been doing this on motorcycles for years. Havent tried it on a car yet but figure im gonna when the camaro is ready. Short version. Clear plastic tube forced over bleeder nub run up higher than the master cylinder. Pump til full. Close bleeder after a beer or two. How else to submerge a brake system? Amazing how bubbles work their way out even on systems that are all uphill.

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post #9 of 12 (permalink) Old May 26th, 18, 07:31 AM Thread Starter
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Re: Braking system

He mentioned bench bleeding, but at 1am and a few beers.... MC didn't have a bleed kit, so we cracked the lines and pumped. He is supposed to bring a vacuum over and hit it again

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post #10 of 12 (permalink) Old May 26th, 18, 10:35 AM
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Re: Braking system

working on cars and alcohol don't mix
drink after the work is done
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post #11 of 12 (permalink) Old May 26th, 18, 10:49 AM
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Re: Braking system

If you didnít bench bleed the master you should remove it and do it.....

Don

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post #12 of 12 (permalink) Old May 31st, 18, 07:38 PM
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Re: Braking system

I know when my right rear brake line cracked they used a power bleeder and still had trouble getting the air out. It took several tries.
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