I have a 2003 2wd f150 and I just replaced the front break pads, rotors, and calipers. I did this because when I braked my truck was pulling to the right. When I was all done I went to bleed the brakes and all of them blead accept the front passenger. I tested to see if the line is clogged and it's not that either. I looked at the old hardware and noticed that the right side looked as if it had never been compressed. The pads were practically brand new wile the drivers side was almost metal on metal. Any advise?

 

So you're saying that your brakes are broken.

Do you mean that no fluid comes out of the bleed screw? Break open the connections on the way back to the ABS module until fluid comes out when you push the pedal. You might have a blocked line farther back (you didn't say which line you meant was not clogged). Be careful at the ABS module, if you get a bubble in it I think you have to do a service bleed.

 

sounds to me like the caliper is seized and the bleed port is possible clogged but you were vague on the bleed issue. We’re you getting any fluid while bleeding or were you having issues getting air out of the system? If you weren’t getting any fluid out of the system you have a clog somewhere. Possibly in the caliber itself. You could try swapping calibers and install each by just hooking the hoses up just to eliminate to see if you can repeat it on the other side but the extra bleeding is time better spent. If it were me I would just buy another caliper since you say the hoses are good. I had a caliper seize when I first bought my 97. I think dirt caused it because it had over 200,000 miles and that brake fluid looked like used motor oil.

 

Yeah so I disconnected the hose from the housing (the part that all the break lines connect to just before it connects to the master cylinder.) I tried to bleed it directly from there with no hose or caliper connected and it still didn't bleed. It's weird because all of the other hoses are getting fluid accept for this one.

If you look in the middle of this module (where all of the break lines are connected) you can see the port where there is a line missing, this is where I disconnected it a d tried to pump the break to see if any fluid came out, noting did.
In pretty sure that part is called the "abs pump" and it cost around 300 so I am really hoping that's not the issue. What I don't get is why the other three are getting fluid but not this one.

 

There are valves inside that block flow when the module is controlling the brakes. If yours has been stuck and dry for that long that's not good.

I've read posts from people who got one from the wrecking yard. But you'll need to do a service bleed probably. Good luck.

 

Oh mannn, you should not have disconnected at the pump....not if this was true, -

You confirmed it was the caliper. UNLESS, - your saying the line just dripped disconnected....? If so , that wouldn't matter. The line has to pressurize to confirm.

However, if you pumped the brake pedal a few times with the line disconnected from just the caliper (not the pump) on the right, and much more fluid ran from it, that would of been much more accurate confirming the caliper is at fault.

Anyway and again, - did you have flow to the caliper under pressure to begin with? The answer to that one would still narrow it down some.

 

Hopefully that ^^^ was easy enough to understand. Just needs an answer.

Now that you pulled the line at the pump and invited air into it, I'm not sure you can purge that correctly without the correct tools. Shouldn't of held off on pulling it there.

If you find the caliper is seized. There's also a good chance the rubber brake hose is restricted. The break down from the inside out and restrict flow which becomes more severe with time. If that's the case, the caliper pistons can eventually seize in place from lack of operation,lubrication and correct pressure.

Understand what I'm saying?

Good Luck!

 

Looks like he replaced the calipers already and found the source of the pulling problem. If one side was like new and the other worn completely out he had the problem for a long time. Kind of way past diagnosing the original pulling problem, might be that the pump is seized now. Who knows. Think he said no fluid coming directly from the ABS pump.

 

Not sure what you mean, most of what you said doesn't matter. He should answer the question.

EDIT: You even sort of mentioned the same thing earlier, work you way back, pressurize at the connections. I'm not convinced he pressurized, clearing that up first would be a good thing.
I wouldn't of told him to open up the pump tho, I don't think that was a good idea without a controller, pressure bleeder and know- how. Sure, there's no fluid at the pump connection NOW.... seal was compromised as soon as the fitting was cut loose. Fluid in the line proceeding the pump was confirmed, that much we know correct..post 1. Pump is still protected. Pressurizing at each fitting within that section is first. This is unclear at this point...from the OP anyway.

You following maybe ?

 

You're saying the new caliper is clogged just like the old one. Right? Is that what you're saying? The new caliper is seized and the old one was too?