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|Master Cylinder Bore Diameter:||1.125 in|
|Master Cylinder Material:||Aluminum|
|Mounting Hole Quantity:||2|
|New Or Remanufactured:||New|
|Primary Outlet Thread Diameter:||M12 x 1.0 mm|
|Secondary Outlet Thread Diameter:||M10 x 1.0 mm|
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Q:my brake pedal pushes to floor, I have no leaks or lose of brake fluid, with truck off pedal goes half way to floor then stops while holding pedal down and starting engine pedal fades to floor. I can still stop by pumping brakes but pedal still fades. Could this be brake master cylinder? I have no indicator lights on showing any problems.
A:I'm glad to assist, Bill! It's definitely possible that a failing valve inside your master cylinder could cause this type of failure. If you have recently done a brake job or your fluid was low and you have added fluid, there could be air in the line. If there is air in your brake lines you could experience similar symptoms as air compresses easier than brake fluid. Once the vehicle is turned on your brake booster provides you additional force to your brakes.