Theres a leak somewhere. fill master then pump pedal 15 times then take alook under the car and look for a leak, for it to drain overnight means its a pretty big leak you should be able to spot it, try that. hope this helps.
You definitely have a leak fluid does not just dissapear overnight the leak could be the master cylinder on the inside by the booster
Testimonial: "You might be right, thanks if none is found under the car maybe under the carpet, I did put cardboard under the car to see if any dripping falls"
Here is the problem, u need a special tool that holds the ABS hydraulic valves open during bleeding, this tool is at the dealer or a good brake shop, the tool cost $5000.00 without the tool you will never get the air out of the ABS hydraulic control module
I would suspect the master cylinder is bad. Where did the fluid go would be my question. You should see a leak somewhere. Did you bleed the brakes in this order. RR >> LR >> RF >> and ending at the LF? Did you keep the master cylinder full at all times during the bleeding process. If you did then your Master Cylinder is bad.
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I have it outside in the snow but will try to get it someplace to get under it to look close at all the lines , there has not been any obvious leaking and I wouldnt have been able to see any on the ground with conditions , thanks
does this car have ABS brakes?
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