No Brakes!
Thread Starter
Safety Car
Joined: Jan 2004
Posts: 4,549
Likes: 343
From: Glastonbury CT
No Brakes!
Replaced one left rear caliper and brake lite on and pedal to floor. I bled it manual as i have done for the last 20 years. There were 3 brake bleed screws on caliper and i bled all three. MC always was topped off! Do i need to bleed all calipers or replace this new caliper i bought at Rock Auto? It was not a rebuilt one but i assume it was a mongrel from Asia! Any suggestions my old Delco was scored inside and non a good candidate for a rebuild! All suggestions welcomed.
Le Mans Master
Joined: Aug 2005
Posts: 6,539
Likes: 1,972
From: Temple Terrace Florida
I agree. Bleeders should only be on the top of the caliper. Since air travels up, it makes no sense to put a bleeder on the bottom. There are plugs to use for the bottom. If your master cylinder ran dry, bench bleed it. Next, bleed the calipers starting with the LR, RR,RF and LF. I hit the caliper with a rubber mallet to dislodge any air bubbles. Jerry
Le Mans Master
Joined: Jun 2019
Posts: 5,475
Likes: 2,183
From: Loveland
There is an issue with the angle of the rear calipers. Raise the front like with ramps, remove both rear wheels and lower the rear as much as possible, then bleed. I finally got a Motive bleeder at the MC and have had real good luck. Use a clear tube at the bleeders to watch the bubbles. I do inside, outside, inside, outside. If to much fluid dripped out of the line when you had the caliper off, bleed the other side. Doesn't make a difference which one first, just go back and forth to both wheels a couple of times. Front to back systems are completely two different systems, the fronts should be ok.
Last edited by kodpkd; May 10, 2022 at 10:49 AM.
Thread Starter
Safety Car
Joined: Jan 2004
Posts: 4,549
Likes: 343
From: Glastonbury CT
This is the second caliper i purchased off Rock Auto that had a problem . This one had a very small leak and the only way i found it i heard air pushing out when i went to bleed it and then fluid finally released in a stream.This is a brand new caliper as they said when they sold it to me.. It is not sleeved all new casting etc! . I always rebuild mine and have done for the last twenty years.I am pissed at the time i spent with this product.and if i had known about other sources like lone star i would have went in that direction. As far as bleeding you have two seperate circuits in this brake system and if you are only working with the rear ,you only have to bleed that circuit!
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
If air was introduced at a rear caliper, could the bubble work its way up to the Prop Valve? Maybe
If the bubble did make it to the Prop Valve, could it affect the front system?
IDK. Never gave it much thought.
I would guess, highly unlikely.
And vise-versa. Introduce air at the front brake system, effect the rear?
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