Rear brakes won't bleed

gotta 2.7l 4x4...1995...

got the front brakes to bleed no problem, and when I go to the back, nothing coming through either bleeder valve. I gotta tube running out of the bleeder valve into a clear bottle of clean fluid. my pops is in the truck pumping brakes, and when I loosen valve, no air or fluid is coming out. of either wheels. why ideas??

 

Use a pick or something small and poke into the bleeder screw. I'd seen it plug up so well that it wouldn't bleed before.

 

Could be something with your brake load proportioning valve, do a search and you’ll get some more info.

 

Do you know if your rear brakes have been working properly? Or are you bleeding them to troubleshoot why they aren't working?


As said above, you may have an issue with the LSPV. It's this thing (stolen from another TW thread):


Try bleeding that, too. If you aren't getting air/fluid out of that, your problem is likely farther forward. Maybe a clogged or pinched line from the ABS module/master cylinder.

I wouldn't think that both rear bleeder valves would be simultaneously clogged, but that's possible, too.

 

my parking brake is applied...I wonder if that has anything to do with it...

 

I don't think it would or should, it's just a cable. Been a few years since I've bled my brakes though

 

Why'd you start bleeding with the front brakes?

 

Good catch, always go from furthest away from the MC to the closest

 

Hm interesting, I've always heard to start from furthest away from the master cylinder and work your way up. Anyway, I don't think it would result in your rears not bleeding though.

 

yeah, I misread the instruction and started bleeding from right front wheel. hmmm.... yikes. now what

 

cause I'm new at this... haha, and I misread the instruction.

 

I think I'm gonna take off parking break, try bleeding the lsp, and if all else fails try to clean out the rear bleeder valves. I don't see how starting from the front would cause this problem since they are dedicated lines...

 

If your truck is lifted without LSBPV
extension bracket the rear brakes get no fluid.
AND
The weight of the truck must be on the rear axle if wheels are off the ground by jack or stands.
@derektaco

 

truck is lifted...I bought this used. I'll have to check to see about that extension valve you are talking about black dog. there is plenty of weight in there bed at the moment... my old cylinder head and other shit I replaced, haha

 

Take the rear bleeder out completely while there is pressure on the brake pedal. If you get a bunch of fluid coming out and pedal goes to floor, you will know the bleeder is clogged. If not, work backwards to the distribution valve.

 

Bracket extension would be in center of rear differential where the BPV actuator rod ends.
3" lift= 3" extension
6" lift= 6" extension ( KIDS don't try this at home )

 

here is my setup. I am really unsure what the extension part is...
it's a 3 inch body lift

 

That's the LSPV, the bleeder valve is right there on the left with a little rubber cap on it like the others.

The LSPV extension bracket is added when you lift the rear, so the LSPV isn't thrown out of whack. Helps retain normal rear braking ability from what I understand. They look like this and get added on the back of the rear axle. Be really easy to make one yourself, just lifts the arm up a bit.

 

another angle of differential



appears mine weren't added...

 

There's your problem
https://www.tacomaworld.com/threads/bpv-bracket.587862/#post-19625580