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2002 Hyundai Accent, brake line not getting fluid from reservoir
04-05-2012, 09:05 PM
Post: #1
2002 Hyundai Accent, brake line not getting fluid from reservoir
I have a 2002 Hyundai Accent. I replaced the driver side brake caliper and new front pads. I bled the brakes and everything seemed to be okay.

I drove the car out of state and back (about 600 miles). It then sat for a couple days. Now the brake goes all the way to the floor. I bled the back brakes, then passenger front and then tried driver side front.

There is no brake fluid coming out of the brake line. I removed the line up to the reservoir but still no brake fluid is coming out of the reservoir, only for this line. All of the other brakes, when opened, drained easily.

There does not appear to be any leaks since there are no stains under the car. Any suggestions?
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04-05-2012, 09:56 PM
Post: #2
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
If that's a remote reservoir connected to the master cylinder via a hose and you can't get fluid to flow at the bottom of the hose try removing the cap on the reservoir while you work. It's probably air locked. Once the fluid is that far connect the hose again, then bleed the brakes with the cap off. When all seems well, top up the fluid and install the cap.

Let us know how you make out.
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04-05-2012, 10:48 PM
Post: #3
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
(04-05-2012 09:56 PM)Rupe Wrote:  If that's a remote reservoir connected to the master cylinder via a hose and you can't get fluid to flow at the bottom of the hose try removing the cap on the reservoir while you work. It's probably air locked. Once the fluid is that far connect the hose again, then bleed the brakes with the cap off. When all seems well, top up the fluid and install the cap.

Let us know how you make out.

That was one of the things I tried. The cap is off but the flow isn't there for just the one brake.
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04-05-2012, 11:52 PM
Post: #4
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
Some vehicles require the use of a Full Function Scanner that can access the ABS system to properly bleed the brakes. You might find that information in the owners manual or you may need to check with the dealer.

Please let us know what you find.

Thanks for using the forum,
Garner

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04-06-2012, 12:26 AM (This post was last modified: 04-06-2012 12:28 AM by Rupe.)
Post: #5
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
You really don't need much in the way of flow but now I am starting to think the line is clogged or there may be a crimp in the hose. Can you verify there's brake fluid in the reservior and possibly blow the line clear? It should not take too much pressure. Perhaps a can of brake parts cleaner will do the trick?

What I am driving at is you must have fluid to the master cylinder before anothing can happen. If the fluid can't get there you may be sucking air into the system.
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04-06-2012, 10:22 AM (This post was last modified: 04-06-2012 10:24 AM by Garner.)
Post: #6
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
I am really confused here. I think that we need to start at the beginning to make sure that we are all on the same page.

"hcolumber" stated that the cap is off and the flow isn't there for "just the one brake." In my mind I have the picture of the master cylinder having fluid but it isn't coming out the bottom of just "one" line. Is that correct?

I also am not totally clear as to which brake has the issue. It sounds to me like you are saying that it is the Left Front (driver side) that isn't getting the fluid. Is that correct?

I would also just "guess" that the "Brake" light in the dash is on?

If those things are all correct it sounds to me like the master cylinder may have an air pocket and it needs bled. The master cylinder is defective and it needs replaced. Or you are checking for fluid at the ABS valves and the problem is in the valve. (Closed to seal a leak / air pocket.) But we also haven't even confirmed that this vehicle has ABS so there isn't much point in getting into that just yet. So my last question is, does your car have ABS?

Please answer all of those questions so we have a better picture of what we are dealing with.

Thanks for using the forum,
Garner

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04-06-2012, 10:33 AM
Post: #7
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
You make a good point there Garner. After spleeping on this and reading between the lines I have to wonder if the original problem was not with the caliper but with the flex hose. (holding pressure causing a sticking wheel?) He changes the caliper, bleeds it, and seems ok because everything was disturbed. Now the hose is acting up again and blocking the fluid flow. Of course the MC may be shot just due to bleeding a 10 year old system too. That may be a whole 'nuther separate issue (pedal goes way down) or it may be why he can't develop any pressure to bleed the brakes. There are not too many vehicles out there with a remote reservior and I am not familiar enough with the car line to advise specifically one way or another.
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04-06-2012, 11:03 AM
Post: #8
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
"hcolumber" stated that the cap is off and the flow isn't there for "just the one brake." In my mind I have the picture of the master cylinder having fluid but it isn't coming out the bottom of just "one" line. Is that correct?
Correct. I have the line removed from the reservoir but nothing is coming out of the reservoir. The other 3 flow fine.

I also am not totally clear as to which brake has the issue. It sounds to me like you are saying that it is the Left Front (driver side) that isn't getting the fluid. Is that correct?
Correct. Its the driver side front brake.

I would also just "guess" that the "Brake" light in the dash is on?
No. No lights are on on the dash.

If those things are all correct it sounds to me like the master cylinder may have an air pocket and it needs bled. The master cylinder is defective and it needs replaced. Or you are checking for fluid at the ABS valves and the problem is in the valve. (Closed to seal a leak / air pocket.) But we also haven't even confirmed that this vehicle has ABS so there isn't much point in getting into that just yet. So my last question is, does your car have ABS?
No. This car does not have ABS.
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04-07-2012, 12:35 AM
Post: #9
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
Well that's just great! I think I'm even MORE confused now. This is going to be a "Fun" one to figure out. I'm more confused because you say that no light is on? If the pedal is going to the floor I would have really expected that light to be on ... unless the bulb is burnt out? You can usually test that just by turning the key on & watching. The Brake light should blink on for a second as the system checks the bulbs. Fill us in as to if the bulb works in your next post.

For now, I'm thinking that you should try "Bleeding" the master cylinder. You can use a short piece of brake tubing threaded into the port that you have open & loop the tube up & back into the master cylinder reservoir. If you have a "Bench Bleed" kit you can use one of the plastic fittings & the flexible hose provided. A third option is to hold your finger over the port while a helper "Gently" works the brake pedal. It should make bubbles in the reservoir a couple of times and then push your finger off.

I; like Rupe, am not familiar enough with your particular vehicle. It could also have a "Proportioning Valve" built into the master cylinder. That should restrict fluid to two lines though? (back to that whole confusion thing) I'm going to read over all the posts and think on this some more. May be when I come back you & Rupe will have figured it out?

Please keep us updated.

Thanks for using the forum,
Garner

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04-07-2012, 10:08 PM
Post: #10
RE: 2002 Hyundai Accent, brake line not getting fluid from reservoir
Well that's just great! I think I'm even MORE confused now. This is going to be a "Fun" one to figure out. I'm more confused because you say that no light is on? If the pedal is going to the floor I would have really expected that light to be on ... unless the bulb is burnt out? You can usually test that just by turning the key on & watching. The Brake light should blink on for a second as the system checks the bulbs. Fill us in as to if the bulb works in your next post.

Sorry to say, the bulb is not burnt out. When I turn the ignition on, the brake light comes on. Then it goes out.

For now, I'm thinking that you should try "Bleeding" the master cylinder. You can use a short piece of brake tubing threaded into the port that you have open & loop the tube up & back into the master cylinder reservoir. If you have a "Bench Bleed" kit you can use one of the plastic fittings & the flexible hose provided. A third option is to hold your finger over the port while a helper "Gently" works the brake pedal. It should make bubbles in the reservoir a couple of times and then push your finger off.

I do not have a bench bleeder kit. But I can get one If I need to. But if the port is open and the cap is off, then shouldn't gravity make the fluid come out?

I appreciate all the help I can get. Thanks
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