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Unread 11-22-2013, 01:36 PM   #1
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Default Almost no front brakes after changing front pads

Put new front brake pads on the 2002 V70 XC.

Just pulled the calipers off, switched out the pads, and put them back on. No brake lines were disconnected.

Now it feels like there's no front brakes, the pedal travels way further than it should. I gave it a couple laps around the neighborhood but no dice.

Do the rotors need to be machined back or something? There does seem to be a bit of a "lip" around the outside edge, not sure if that is part of the problem. They never felt warped or anything, there was never any vibration when stopping and they felt pretty smooth when I ran my finger over them when we took the calipers off.
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Unread 11-22-2013, 01:38 PM   #2
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It is VERY possible that you got air in the lines. You will need to bleed them to get the air out.
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Unread 11-22-2013, 02:24 PM   #3
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How? No brake lines were disconnected. Could that have happened when we pushed the piston back?
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Unread 11-22-2013, 02:31 PM   #4
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It has happened on my mom's Quest before. I've never used backyard mechanics for brakes since.

I don't know how, but I have the experience that it does happen.

Try pumping the brakes. If the regular pressure that you're used to starts building up, it's air in the lines. That's how we determined it was exactly that.
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Unread 11-22-2013, 02:50 PM   #5
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Originally Posted by legoman786 View Post
It has happened on my mom's Quest before. I've never used backyard mechanics for brakes since.

I don't know how, but I have the experience that it does happen.

Try pumping the brakes. If the regular pressure that you're used to starts building up, it's air in the lines. That's how we determined it was exactly that.
Yeah, that's exactly what it feels like. Subsequent depressions of the brake pedal make it feel more and more normal. We'll try bleeding them.
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Unread 11-22-2013, 03:27 PM   #6
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Bled the two front brakes... feels marginally better.

I'm gonna go get the rotors resurfaced tomorrow as well as having the bleeding professionally done. We have to take it in anyway, the last mechanic to do the oil stripped the ****ing drain bolt :\
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Unread 11-22-2013, 03:29 PM   #7
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I've seen this before as well. Pumping the pedal compresses the air in the lines and everything feels normal for a short time.

Have the brakes bled and see if the condition improves.
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Unread 11-22-2013, 03:38 PM   #8
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I've seen this before as well. Pumping the pedal compresses the air in the lines and everything feels normal for a short time.

Have the brakes bled and see if the condition improves.
Yeah, we're having that done on Monday. They don't resurface rotors but I'm having them check to see if they need to be replaced at least. That can easily be done on our own time.
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Unread 11-22-2013, 11:18 PM   #9
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Another option is you got grease on the rotors or pads, but that would go away fairly quickly.
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Unread 11-23-2013, 02:52 PM   #10
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Hmm... so we put new rotors on the front, now there's a ton of scraping/scuffing noises. The backing plates are nowhere near the rotors, could this be something with the caliper guide pins?
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