Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Bleedin brakes

[Jools]

Originally posted by smilo006
got the bleedin procedure down to a fine art. Next thing is how to find out where the system is losing pressure / lever going soft.

Any ideas or experiences. Is it a dealer job?

What fluid are you using? Could be that you are using your brakes so hard that you're boiling the fluid, but this is unlikely.

More likely explanation, assuming that you've got braided lines, no fluid leaks, good piston seals and blah blah blah is that the brake fluid that you used might not be as fresh as it could be. Brake fluid is hygroscopic and quickly absorbs moisture from the air unless it's in a sealed container (or a sealed braking system). If your brake fluid gets contaminated like this, the water content that's now part of the brake fluid will boil off leaving you with a spongy brake lever (cos now your brake fluid contains a gas that can be compressed instead of a fluid which can't be)