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Cardoctor74
Cardoctor74, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 25927
Experience:  Master ASE Technician
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Hyundai elantra Brake pedal keeps getting soft and I keep

Resolved Question:

Brake pedal keeps getting soft and I keep finding air in the Front Passenger brake line.

I have replaced the master cylinder.

Here is what happened.

1. Brake pedal got very soft and I bled the brakes but it would not fix it.
2. Replaced the master cylinder and brakes were back to normal.
3. 2 weeks later the brake pedal got very soft again. Bled the lines and found air in FR and it fixed it again.
4. 1 week later brakes soft again and air in FR
5. Bled them Sunday, soft again Wed, bled them tonight and air in FR again.

No visible leaks, fluid in resevoir always stays full, after I bleed the brakes they work great for a few days.

When I bled the brakes tonight, there was a lot of air in the line.
Submitted: 5 years ago.
Category: Hyundai
Expert:  Cardoctor74 replied 5 years ago.
Have you replaced that caliper yet?
Customer: replied 5 years ago.
No. Is it possible for he caliper to suck in air but not leak anything out?
Expert:  Cardoctor74 replied 5 years ago.
Yes absolutely . I would replace that caliper and bleed all 4 wheels . If there is still an issue it would be a problem with the ABS system. These are the next steps. Hoped this helped. Positive feedback and bonuses greatly appreciated.
Customer: replied 5 years ago.

With the new caliper do you just disconnect and reconnect to new as fast as possible and not drain all the fluid?

 

I will try it and let you know if it works.

Expert:  Cardoctor74 replied 5 years ago.
Yes you can clamp off brake line replace caliper remove clamp and bleed all 4 wheels. Hoped this helped. Positive feedback and bonuses greatly appreciated.
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